Cita APA (7th ed.)

Hechtel, G. J. (1965). A systematic study of the Demospongiae of Port Royal, Jamaica. Peabody Museum of Natural History, Yale University.

Cita Chicago (17th ed.)

Hechtel, George John. A Systematic Study of the Demospongiae of Port Royal, Jamaica. New Haven, Conn: Peabody Museum of Natural History, Yale University, 1965.

Cita MLA (9th ed.)

Hechtel, George John. A Systematic Study of the Demospongiae of Port Royal, Jamaica. Peabody Museum of Natural History, Yale University, 1965.