APA Citatie

Gregor, A. S. (1964). Short history of the universe: The stars and planets,their birth,evolution,nature.

Chicago Style citaat

Gregor, Arthur S. Short History of the Universe: The Stars and Planets,their Birth,evolution,nature. 1964.

MLA citatie

Gregor, Arthur S. Short History of the Universe: The Stars and Planets,their Birth,evolution,nature. 1964.

Let op: Deze citaties zijn niet altijd 100% accuraat.