Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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