APA (7th ed.) Citation

Baker, R. H. (1946). Astronomy: A textbook for university and college students (4th ed.). D. Van Nostrand company, inc..

Chicago Style (17th ed.) Citation

Baker, Robert Horace. Astronomy: A Textbook for University and College Students. 4th ed. New York: D. Van Nostrand company, inc., 1946.

MLA (9th ed.) Citation

Baker, Robert Horace. Astronomy: A Textbook for University and College Students. 4th ed. D. Van Nostrand company, inc., 1946.