Parker, H. (1974). Simplified design of structural steel (4th ed.). Apson Enterprises.
Citazione stile Chigago Style (17a edizione)Parker, Harry. Simplified Design of Structural Steel. 4th ed. Quezon City: Apson Enterprises, 1974.
Citatione MLA (9a ed.)Parker, Harry. Simplified Design of Structural Steel. 4th ed. Apson Enterprises, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.