23 Resource LinksASME (American Society of Mechanical Engineers).

http://www.asme.org

123 Resource LinksASSE (American Society of Safety Engineers).

http://www.asse.org

241 Resource LinksBOMA (Building Owners and Managers Association International).

http://www.boma.org

25 Resource LinksEESF (Elevator and Escalator Safety Foundation).

http://www.eesf.org

26 Resource LinksIAEC (International Association of Elevator Consultants).

http://www.iaec.org

27 Resource LinksIAEE (International Association of Elevator Engineers)

http://www.elevcon.com

281 Resource LinksIFMA (International Facility Management Association).

http://www.ifma.org

29 Resource LinksNAEC (National Association of Elevator Contractors)

http://www.naec.org

30 Resource LinksNAESA (National Association of Elevator Safety Authorities)

https://www.naesai.org