Gaya APA

Barsom, J, M. (2009). Properties Of Bridge Steels Vol I, Chap 3 Highway Structures Design Handbook . America: American Iron and steel Institute.

Gaya MLA

Barsom, John, M. "Properties Of Bridge Steels Vol I, Chap 3 Highway Structures Design Handbook". America: American Iron and steel Institute, 2009. Text.