APA (7th ed.) Citation

Harman, T. L., & Allen, C. E. (1999). Guide to the National Electrical Code (1999 ed.). Prentice-Hall PTR.

Chicago Style (17th ed.) Citation

Harman, Thomas L., and Charles E. Allen. Guide to the National Electrical Code. 1999 ed. Upper Saddle River, NJ: Prentice-Hall PTR, 1999.

MLA (9th ed.) Citation

Harman, Thomas L., and Charles E. Allen. Guide to the National Electrical Code. 1999 ed. Prentice-Hall PTR, 1999.