APA (7th ed.) Citation

Kienle, H. (1968). Modern astronomy: An introduction. Thomas Y. Crowell.

Chicago Style (17th ed.) Citation

Kienle, Hans. Modern Astronomy: An Introduction. New York: Thomas Y. Crowell, 1968.

MLA (8th ed.) Citation

Kienle, Hans. Modern Astronomy: An Introduction. Thomas Y. Crowell, 1968.

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