Gaya APA

SAE, . (1991). The 1991 SAE Handbook vol. 4 On Highway Vehicles and off Highway Machinery (1991). : USA : SAE,.

Gaya MLA

SAE, . "The 1991 SAE Handbook vol. 4 On Highway Vehicles and off Highway Machinery". 1991 : USA : SAE,, 1991. Text.