In Starting Out: The Sicilian, GM John Emms introduces a lot of possibilities.
https://web.archive.org/web/20140627122350/http://www.chesscafe.com/text/hansen123.pdf
Suggestions can be found in:
Chris Baker's A Startling Chess Opening Repertoire
http://www.theweekinchess.com/john-watson-reviews/more-nco-gambits-and-repertoires
John Emms's Attacking with 1.e4
https://web.archive.org/web/20140627003909/http://www.chesscafe.com/text/hansen29.pdf
http://www.theweekinchess.com/john-watson-reviews/one-book-repertoires-online-bargain
Kaufman's original repertoire book, The Chess Advantage in Black and White
https://web.archive.org/web/20140626223458/http://www.chesscafe.com/text/hansen62.pdf
http://www.theweekinchess.com/john-watson-reviews/in-the-beginning-there-was-theory
Sam Collins's An Attacking Repertoire for White
https://web.archive.org/web/20140627122005/http://www.chesscafe.com/text/hansen66.pdf
Neil McDonald's Starting Out 1.e4
https://web.archive.org/web/20140627032909/http://www.chesscafe.com/text/hansen89.pdf
http://www.theweekinchess.com/john-watson-reviews/opening-books-en-masse-part-3
Chess Openings for White, Explained by Alburt, Dzindzichashvili & Perelshteyn (2006)
https://web.archive.org/web/20140627032909/http://www.chesscafe.com/text/hansen89.pdf
https://web.archive.org/web/20140626210017/http://www.chesscafe.com/text/hansen132.pdf
http://www.theweekinchess.com/john-watson-reviews/good...good...good...disastrous
The King's Indian attack - Move by Move by GM Neil McDonald (2014)
Starting Out: King's Indian Attack by John Emms (2005)
https://web.archive.org/web/20140627034051/http://www.chesscafe.com/text/hansen81.pdf
The Complete c3 Sicilian by Evgeny Sveshnikov (2010)
https://web.archive.org/web/20140626234618/http://www.chesscafe.com/text/hansen141.pdf
How to Beat the Sicilian Defence by Gawain Jones (2011)
https://web.archive.org/web/20140626195254/http://www.chesscafe.com/text/hansen147.pdf
Starting Out: Closed Sicilian by Richard Palliser (2006)
https://web.archive.org/web/20140626175558/http://www.chesscafe.com/text/hansen87.pdf
The Grand Prix Attack by Evgeny Sveshnikov (2013)
https://web.archive.org/web/20140626232217/http://www.chesscafe.com/text/hansen171.pdf
Mayhem in the Morra by Marc Esserman (2012) https://web.archive.org/web/20140627043409/http://www.chesscafe.com/text/hansen160.pdf
Rossolimo and Friends by Alexei Kornev (2015)
http://gainesvillechesstraining.com/?page_id=393
The Modern Anti-Sicilian: 1.e4 c5 2.a3 by Sergei Soloviov (2014)
Taming the Sicilian by Nigel Davies (2002)
https://web.archive.org/web/20140627033203/http://www.chesscafe.com/text/hansen46.pdf
Experts vs. the Sicilian edited by Jacob Aagaard & John Shaw (2006)
https://web.archive.org/web/20140626225408/http://www.chesscafe.com/text/hansen71.pdf
Seven Ways to Smash the Sicilian by Yuri Lapshun & Nick Conticello (2009)
https://web.archive.org/web/20140627015506/http://www.chesscafe.com/text/hansen126.pdf
Dismantling the Sicilian by Jesus de la Villa (2009)
https://web.archive.org/web/20140627002658/http://www.chesscafe.com/text/hansen129.pdf
Sicilian Attacks by Yuri Yakovich (2010)
https://web.archive.org/web/20140627063241/http://www.chesscafe.com/text/hansen145.pdf
Slay the Sicilian by Timothy Taylor (2012)
https://web.archive.org/web/20140627043409/http://www.chesscafe.com/text/hansen160.pdf
Steamrolling the Sicilian by Sergey Kasparov (2013)
https://web.archive.org/web/20140627101148/http://www.chesscafe.com/text/hansen174.pdf
MODERNIZED: The Open Sicilian written by IM Zhanibek Amanov and FM Kostya Kavutskiy (2015)
http://claudiamunoz.com/index.php/en/chess-book-reviews/5430-my-book-review-modernized-the-open-sicilian
I constantly have trouble with this opening, and though I have my ways of responding to it, it normally throws me off track (as white) and I normally lose the game. Suggestions?