Baker, R. H. (1950). Astronomy: A textbook for University and College Students. New York: D.Van Nostrand Company, Inc.
Chicago Style aipamenaBaker, Ropert H. Astronomy: A Textbook for University and College Students. New York: D.Van Nostrand Company, Inc, 1950.
MLA aipamenaBaker, Ropert H. Astronomy: A Textbook for University and College Students. New York: D.Van Nostrand Company, Inc, 1950.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.