American National Standards Institute. Standards Committee A17 on a Safety Code for Elevators. (1978). American national standard safety code for elevators, dumbwaiters, escalators, and moving walks: Covering their design, construction, installation, operation, inspection, testing, maintenance, alteration, and repair (9th ed.). American Society of Mechanical Engineers.
Chicago Style (17th ed.) CitationAmerican National Standards Institute. Standards Committee A17 on a Safety Code for Elevators. American National Standard Safety Code for Elevators, Dumbwaiters, Escalators, and Moving Walks: Covering Their Design, Construction, Installation, Operation, Inspection, Testing, Maintenance, Alteration, and Repair. 9th ed. New York: American Society of Mechanical Engineers, 1978.
MLA (9th ed.) CitationAmerican National Standards Institute. Standards Committee A17 on a Safety Code for Elevators. American National Standard Safety Code for Elevators, Dumbwaiters, Escalators, and Moving Walks: Covering Their Design, Construction, Installation, Operation, Inspection, Testing, Maintenance, Alteration, and Repair. 9th ed. American Society of Mechanical Engineers, 1978.