Jallings, J. H. (1915). Elevators: A practical treatise on the development and design of hand, belt, steam, hydraulic, and electric elevators. American technical society.
Chicago Style (17th ed.) CitationJallings, John H. Elevators: A Practical Treatise on the Development and Design of Hand, Belt, Steam, Hydraulic, and Electric Elevators. Chicago: American technical society, 1915.
MLA (9th ed.) CitationJallings, John H. Elevators: A Practical Treatise on the Development and Design of Hand, Belt, Steam, Hydraulic, and Electric Elevators. American technical society, 1915.
Warning: These citations may not always be 100% accurate.