APA (7th ed.) Citation

Asimov, I. (1980). The universe: From flat earth to black holes--and beyond (3rd ed., rev.). Walker.

Chicago Style (17th ed.) Citation

Asimov, Isaac. The Universe: From Flat Earth to Black Holes--and Beyond. 3rd ed., rev. New York: Walker, 1980.

MLA (9th ed.) Citation

Asimov, Isaac. The Universe: From Flat Earth to Black Holes--and Beyond. 3rd ed., rev. Walker, 1980.