Gaya APA

R., J, F., H., A, W. (1980). Farm Power And Tractors (Edisi Keempat). new york: McGraw-Hill Book Company.

Gaya MLA

R., Jones, Fred., H., Alred, William. "Farm Power And Tractors". Edisi Keempat new york: McGraw-Hill Book Company, 1980. Text.