Cita APA

Underwriters Laboratories, & Underwriters Laboratories. (1987). Standard for commercial electric cooking appliances: UL 197 (7. edition.). Illinois: Ul.

Citación estilo Chicago

Underwriters Laboratories, y Underwriters Laboratories. Standard for Commercial Electric Cooking Appliances: UL 197. 7. edition. Illinois: Ul, 1987.

Cita MLA

Underwriters Laboratories, y Underwriters Laboratories. Standard for Commercial Electric Cooking Appliances: UL 197. 7. edition. Illinois: Ul, 1987.