APA (7th ed.) Citation

Prentice, B. R. (1947). Atomic-power engineering. Mechanical Engineering, 69, 721.

Chicago Style (17th ed.) Citation

Prentice, B. R. "Atomic-power Engineering." Mechanical Engineering 69 (1947): 721.

MLA (9th ed.) Citation

Prentice, B. R. "Atomic-power Engineering." Mechanical Engineering, vol. 69, 1947, p. 721.