APA (7th ed.) Citation

Chbosky, S. (2009). The perks of being a wallflower. Pocket Books.

Chicago Style (17th ed.) Citation

Chbosky, Stephen. The Perks of Being a Wallflower. London [u.a.]: Pocket Books, 2009.

MLA (9th ed.) Citation

Chbosky, Stephen. The Perks of Being a Wallflower. Pocket Books, 2009.

Warning: These citations may not always be 100% accurate.