APA (7th ed.) Citation

Shepard, S. (2010). Heartless: A pretty little liars novel (1st pbk. ed.). HarperTeen.

Chicago Style (17th ed.) Citation

Shepard, Sara. Heartless: A Pretty Little Liars Novel. 1st pbk. ed. New York: HarperTeen, 2010.

MLA (8th ed.) Citation

Shepard, Sara. Heartless: A Pretty Little Liars Novel. 1st pbk. ed. HarperTeen, 2010.

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