Hopf, P. S., & Raeber, J. A. (1984). Access for the handicapped: The barrier-free regulations for design and construction in all 50 states. Van Nostrand Reinhold.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHopf, Peter S., और John A. Raeber. Access for the Handicapped: The Barrier-free Regulations for Design and Construction in All 50 States. New York: Van Nostrand Reinhold, 1984.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHopf, Peter S., और John A. Raeber. Access for the Handicapped: The Barrier-free Regulations for Design and Construction in All 50 States. Van Nostrand Reinhold, 1984.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.