Cita APA (7a ed.)

Bussiness Publishers International Corporation. (1943). Código eléctrico nacional 1940. National electrical manufactures association.

Cita Chicago Style (17a ed.)

Bussiness Publishers International Corporation. Código Eléctrico Nacional 1940. New York: National electrical manufactures association, 1943.

Cita MLA (8a ed.)

Bussiness Publishers International Corporation. Código Eléctrico Nacional 1940. National electrical manufactures association, 1943.