Gaya APA

Libby, J, R. (1977). Modern Prestressed Concrete Design Principles and Contruction Methods (-). New York: New York: Van Nonstrand Reinhold,.

Gaya MLA

Libby, James, R. "Modern Prestressed Concrete Design Principles and Contruction Methods". - New York: New York: Van Nonstrand Reinhold,, 1977. T.Sipil.