Cita APA (7th ed.)

Lester, H., & Munsinger, L. (1988). Tacky the penguin. Houghton Mifflin Co..

Cita Chicago (17th ed.)

Lester, Helen, i Lynn Munsinger. Tacky the Penguin. Boston: Houghton Mifflin Co., 1988.

Cita MLA (8th ed.)

Lester, Helen, i Lynn Munsinger. Tacky the Penguin. Houghton Mifflin Co., 1988.