APA (7th ed.) Citation

Berg & Fredrick. (1978). Descriptive astronomy. D. Van Nostrand.

Chicago Style (17th ed.) Citation

Berg and Fredrick. Descriptive Astronomy. New York: D. Van Nostrand, 1978.

MLA (8th ed.) Citation

Berg and Fredrick. Descriptive Astronomy. D. Van Nostrand, 1978.

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