APA (7th ed.) Zitazioa
SINGH, J. (1961). Great Ideas and theories of modern cosmology. Dover Publications.
Chicago Style (17th ed.) Zitazioa
SINGH, Jagjit. Great Ideas and Theories of Modern Cosmology. New York: Dover Publications, 1961.
MLA (9th ed.) Zitazioa
SINGH, Jagjit. Great Ideas and Theories of Modern Cosmology. Dover Publications, 1961.
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