Cita APA (7th ed.)

KOTPAL, R. L. (1997). Porifera (7th ed.). RASTOGI PUBLICATIONS.

Cita Chicago (17th ed.)

KOTPAL, R. L. Porifera. 7th ed. New Delhi: RASTOGI PUBLICATIONS, 1997.

Cita MLA (9th ed.)

KOTPAL, R. L. Porifera. 7th ed. RASTOGI PUBLICATIONS, 1997.