Gaya APA

Libby, J, R. (1977). Modern Prestressed Concrete Design Principles and Construction Methode Second Edition (Ed. 2). California: VNRC.

Gaya MLA

Libby, James, R. "Modern Prestressed Concrete Design Principles and Construction Methode Second Edition". Ed. 2 California: VNRC, 1977. Teknik Sipil.