APA (7th ed.) Citation

Shaffer, R. E., & Fitzgerald, J. H. (1981). Stray earth current control. Materials Performance, 20, 9.

Chicago Style (17th ed.) Citation

Shaffer, R. E., and J. H. Fitzgerald. "Stray Earth Current Control." Materials Performance 20 (1981): 9.

MLA (9th ed.) Citation

Shaffer, R. E., and J. H. Fitzgerald. "Stray Earth Current Control." Materials Performance, vol. 20, 1981, p. 9.