APA (7th ed.) Citation

Apfel, N. H. (1983). Astronomy and planetology. F. Watts.

Chicago Style (17th ed.) Citation

Apfel, Necia H. Astronomy and Planetology. New York: F. Watts, 1983.

MLA (9th ed.) Citation

Apfel, Necia H. Astronomy and Planetology. F. Watts, 1983.

Warning: These citations may not always be 100% accurate.