Cita APA (7th ed.)

Ellis, R. (1976). The book of sharks. Grosset & Dunlap.

Cita Chicago (17th ed.)

Ellis, Richard. The Book of Sharks. New York: Grosset & Dunlap, 1976.

Cita MLA (9th ed.)

Ellis, Richard. The Book of Sharks. Grosset & Dunlap, 1976.