APA (7th ed.) Citation

Hartwell & Cramer. (2007). Year's best sf 12. Harper Collins Publisher.

Chicago Style (17th ed.) Citation

Hartwell and Cramer. Year's Best Sf 12. New York: Harper Collins Publisher, 2007.

MLA (8th ed.) Citation

Hartwell and Cramer. Year's Best Sf 12. Harper Collins Publisher, 2007.