APA (7th ed.) Citation

Underwriters' Laboratories. (1956). Electrical construction materials list. Underwriters' Laboratories.

Chicago Style (17th ed.) Citation

Underwriters' Laboratories. Electrical Construction Materials List. Chicago: Underwriters' Laboratories, 1956.

MLA (9th ed.) Citation

Underwriters' Laboratories. Electrical Construction Materials List. Underwriters' Laboratories, 1956.

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