Tohutoro APA (7th ed.)
Spreiregen, P. D. (1979). Design Competitions. McGraw-Hill.
Tohutoru Kātū Chicago (17th ed.)
Spreiregen, Paul D. Design Competitions. New York [usw.], Düsseldorf: McGraw-Hill, 1979.
Tohutoro MLA (9th ed.)
Spreiregen, Paul D. Design Competitions. McGraw-Hill, 1979.
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