APA (7 वां संस्करण) प्रशस्ति पत्र

U.S. Department of Housing and Urban Development. (1968). Urban and regional information systems: Support for planning in metropolitan areas. s.n.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

U.S. Department of Housing and Urban Development. Urban and Regional Information Systems: Support for Planning in Metropolitan Areas. Washington, D. C: s.n, 1968.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

U.S. Department of Housing and Urban Development. Urban and Regional Information Systems: Support for Planning in Metropolitan Areas. s.n, 1968.