Παραπομπή APA

Hartmann, W. K. (1972). Moons and planets: An introduction to planetary science. Bogden & Quiley.

Παραπομπή Chicago Style

Hartmann, William K. Moons and Planets: An Introduction to Planetary Science. New York: Bogden & Quiley, 1972.

Παραπομπή MLA

Hartmann, William K. Moons and Planets: An Introduction to Planetary Science. Bogden & Quiley, 1972.