Dyfyniad APA

ebrary, Inc. (1989). An International directory of building research organizations. National Academy Press.

Dyfyniad Arddull Chicago

ebrary, Inc. An International Directory of Building Research Organizations. Washington, D.C.: National Academy Press, 1989.

Dyfyniad MLA

ebrary, Inc. An International Directory of Building Research Organizations. National Academy Press, 1989.

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