Cita APA (7a ed.)

Ponnamperuma, C. (1978). Comparative planetology. Academic Press.

Cita Chicago Style (17a ed.)

Ponnamperuma, C. Comparative Planetology. New York: Academic Press, 1978.

Cita MLA (9a ed.)

Ponnamperuma, C. Comparative Planetology. Academic Press, 1978.