Cita APA (7a ed.)

Kuiper, G. F. (1954). The Earth as a planet. The University of Chicago.

Cita Chicago Style (17a ed.)

Kuiper, Gerard F. The Earth as a Planet. Chicago: The University of Chicago, 1954.

Cita MLA (9a ed.)

Kuiper, Gerard F. The Earth as a Planet. The University of Chicago, 1954.