APA (7th ed.) Citation

Stallcup, J. G. (1989). Illustrated changes of the 1990 NEC. American Technical Publishers.

Chicago Style (17th ed.) Citation

Stallcup, James G. Illustrated Changes of the 1990 NEC. Illinois: American Technical Publishers, 1989.

MLA (9th ed.) Citation

Stallcup, James G. Illustrated Changes of the 1990 NEC. American Technical Publishers, 1989.

Warning: These citations may not always be 100% accurate.