United Nations Expert Group Meeting on Barrier-Free Design, New York, International Society for Rehabilitation of the Disabled, Duncan, B., & Hammerman, S. (1975). Barrier-free design: Report of a United Nations Expert Group Meeting on Barrier-Free Design, held June 3-8, 1974, at the United Nations Secretariat, New York. Rehabilitation International.
Chicago-referens (17:e uppl.)United Nations Expert Group Meeting on Barrier-Free Design, New York, International Society for Rehabilitation of the Disabled, Barbara Duncan, och Susan Hammerman. Barrier-free Design: Report of a United Nations Expert Group Meeting on Barrier-Free Design, Held June 3-8, 1974, at the United Nations Secretariat, New York. New York: Rehabilitation International, 1975.
MLA-referens (8:e uppl.)United Nations Expert Group Meeting on Barrier-Free Design, New York, et al. Barrier-free Design: Report of a United Nations Expert Group Meeting on Barrier-Free Design, Held June 3-8, 1974, at the United Nations Secretariat, New York. Rehabilitation International, 1975.