APA (7th ed.) Citation

Krogdahl, W. S. (1962). The astronomical universe (Second edition.). Macmillan.

Chicago Style (17th ed.) Citation

Krogdahl, Wasley S. The Astronomical Universe. Second edition. New York: Macmillan, 1962.

MLA (9th ed.) Citation

Krogdahl, Wasley S. The Astronomical Universe. Second edition. Macmillan, 1962.

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