APA aipamena

SPREIREGEN, P. D. (1979). Design Competitions. McGraw-Hill.

Chicago Style aipamena

SPREIREGEN, Paul D. Design Competitions. McGraw-Hill, 1979.

MLA aipamena

SPREIREGEN, Paul D. Design Competitions. McGraw-Hill, 1979.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.