Cita APA (7th ed.)

Marent, T., & Jackson, T. (2008). Frog. DK.

Cita Chicago (17th ed.)

Marent, Thomas, i Tom Jackson. Frog. New York, N.Y.: DK, 2008.

Cita MLA (8th ed.)

Marent, Thomas, i Tom Jackson. Frog. DK, 2008.