Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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