Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.