Gaya APA

Young, D., Timoshenko, S. (1978). Elements of stregth of materials (Edisi Keempat). New York: Litton Educational Publishing.

Gaya MLA

Young, D.H.., Timoshenko, S.P.. "Elements of stregth of materials". Edisi Keempat New York: Litton Educational Publishing, 1978. Text.