Cita APA (7th ed.)

Berenstain, J., & Berenstain, M. (2007). Trim the tree. Harper Festival.

Cita Chicago (17th ed.)

Berenstain, Jan, i Mike Berenstain. Trim the Tree. New York: Harper Festival, 2007.

Cita MLA (8th ed.)

Berenstain, Jan, i Mike Berenstain. Trim the Tree. Harper Festival, 2007.