APA (7th ed.) Citation

Calder, N. (1978). The key to the universe: A report on the new physics. Penguin Books.

Chicago Style (17th ed.) Citation

Calder, Nigel. The Key to the Universe: A Report on the New Physics. Harmondsworth, Eng. ; New York: Penguin Books, 1978.

MLA (8th ed.) Citation

Calder, Nigel. The Key to the Universe: A Report on the New Physics. Penguin Books, 1978.