APA (7th ed.) Citation

Stratton, J. A. (1961). Physics and engineering in a free society. Physics Today, 14, 20.

Chicago Style (17th ed.) Citation

Stratton, J. A. "Physics and Engineering in a Free Society." Physics Today 14 (1961): 20.

MLA (9th ed.) Citation

Stratton, J. A. "Physics and Engineering in a Free Society." Physics Today, vol. 14, 1961, p. 20.