APA (7th ed.) Citation

Rossi, B. (1953). Where do cosmic rays come from? Scientific American, 189, 64.

Chicago Style (17th ed.) Citation

Rossi, B. "Where Do Cosmic Rays Come from?" Scientific American 189 (1953): 64.

MLA (9th ed.) Citation

Rossi, B. "Where Do Cosmic Rays Come from?" Scientific American, vol. 189, 1953, p. 64.