APA (7th ed.) Zitazioa

Gray, H. E. (1955). Farm service buildings. McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

Gray, Harold E. Farm Service Buildings. New York: McGraw-Hill, 1955.

MLA (9th ed.) Zitazioa

Gray, Harold E. Farm Service Buildings. McGraw-Hill, 1955.

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