Gaya APA

Beer, F, P, ;, J, E, R, ;, D, J, T. (2006). Mechanics of materials, 4th ed. . New York: McGraw-Hill.

Gaya MLA

Beer, Ferdinand, P., ;, Johnston,, E., Russel, ;, Dewolf,, John, T.. "Mechanics of materials, 4th ed.". New York: McGraw-Hill, 2006. Text.