APA (7th ed.) Citation

Calder, N. (1977). The key to the universe: A report on the new physics. Viking Press.

Chicago Style (17th ed.) Citation

Calder, Nigel. The Key to the Universe: A Report on the New Physics. New York: Viking Press, 1977.

MLA (8th ed.) Citation

Calder, Nigel. The Key to the Universe: A Report on the New Physics. Viking Press, 1977.