APA (7th ed.) Citation

(1968). National Electrical Code 1968: A USA Standard. National Fire Protection Association.

Chicago Style (17th ed.) Citation

National Electrical Code 1968: A USA Standard. Boston: National Fire Protection Association, 1968.

MLA (9th ed.) Citation

National Electrical Code 1968: A USA Standard. National Fire Protection Association, 1968.

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