Cita APA (7a ed.)

Laporte, L. F. (1975). Encounter with the earth. Canfield Press.

Cita Chicago Style (17a ed.)

Laporte, Léo F. Encounter with the Earth. San Francisco: Canfield Press, 1975.

Cita MLA (8a ed.)

Laporte, Léo F. Encounter with the Earth. Canfield Press, 1975.