Croft, T., Carr, C. C., Watt, J. H., & Summers, W. I. (1981). American electricians' handbook (10a. ed.). McGraw-Hill.

Croft, Terrell, Clifford C. Carr, John H. Watt, and Wilford I. Summers. American Electricians' Handbook. 10a. ed. Nueva York: McGraw-Hill, 1981.

Croft, Terrell, et al. American Electricians' Handbook. 10a. ed. McGraw-Hill, 1981.