Παραπομπή APA

Knowles, P. (1977). Design of Structural Steelwork. Surrey university.

Παραπομπή Chicago Style

Knowles, Peter. Design of Structural Steelwork. London: Surrey university, 1977.

Παραπομπή MLA

Knowles, Peter. Design of Structural Steelwork. Surrey university, 1977.