APA (7th ed.) Citation

Ronan, C. A. (1964). Optical astronomy: Changing horizons. Phoenix House; Roy Publishers.

Chicago Style (17th ed.) Citation

Ronan, Colin A. Optical Astronomy: Changing Horizons. London : New York: Phoenix House; Roy Publishers, 1964.

MLA (9th ed.) Citation

Ronan, Colin A. Optical Astronomy: Changing Horizons. Phoenix House; Roy Publishers, 1964.

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