Cita APA

Underwriters Laboratories, & Underwriters Laboratories. (1984). Standard for industrial control equipment: UL508 (14. edition --.). Illinois: Ul.

Citación estilo Chicago

Underwriters Laboratories, y Underwriters Laboratories. Standard for Industrial Control Equipment: UL508. 14. edition --. Illinois: Ul, 1984.

Cita MLA

Underwriters Laboratories, y Underwriters Laboratories. Standard for Industrial Control Equipment: UL508. 14. edition --. Illinois: Ul, 1984.