Cita APA (7th ed.)

Seuss, D., & Cohen, C. D. (2008). Yertle the turtle and other stories (50th-anniversary ed.). Random House.

Cita Chicago (17th ed.)

Seuss, Dr, i Charles D. Cohen. Yertle the Turtle and Other Stories. 50th-anniversary ed. New York: Random House, 2008.

Cita MLA (8th ed.)

Seuss, Dr, i Charles D. Cohen. Yertle the Turtle and Other Stories. 50th-anniversary ed. Random House, 2008.