MLA

Beer, Ferdinand Pierre, and Elwood Russell Johnston. Mechanics of Materials. 2nd printing Auckland: McGraw-Hill, 1985.

APA

Beer, F. Pierre, & Johnston, E. Russell. (1985). Mechanics of materials. 2nd printing Auckland: McGraw-Hill.

Chicago

Beer, Ferdinand Pierre, and Elwood Russell Johnston. Mechanics of Materials. 2nd printing Auckland: McGraw-Hill, 1985.