APA (7th ed.) Citation

Sprague, C. S., & Harding, C. F. (1932). Lightning protection of distribution systems and transformers. Purdue University. Engineering Experiment Station. Research Bulletin, 42, 1.

Chicago Style (17th ed.) Citation

Sprague, C. S., and C. F. Harding. "Lightning Protection of Distribution Systems and Transformers." Purdue University. Engineering Experiment Station. Research Bulletin 42 (1932): 1.

MLA (9th ed.) Citation

Sprague, C. S., and C. F. Harding. "Lightning Protection of Distribution Systems and Transformers." Purdue University. Engineering Experiment Station. Research Bulletin, vol. 42, 1932, p. 1.