Cita APA (7a ed.)

Ziefert, H., & Kreloff, E. (2007). Found an apple. Sterling.

Cita Chicago Style (17a ed.)

Ziefert, Harriet, y Elliot Kreloff. Found an Apple. New York: Sterling, 2007.

Cita MLA (8a ed.)

Ziefert, Harriet, y Elliot Kreloff. Found an Apple. Sterling, 2007.