Cita APA (7th ed.)

Parker, H. (1974). Simplified design of structural steel (4th ed.). Apson Enterprises.

Cita Chicago (17th ed.)

Parker, Harry. Simplified Design of Structural Steel. 4th ed. Quezon City: Apson Enterprises, 1974.

Cita MLA (9th ed.)

Parker, Harry. Simplified Design of Structural Steel. 4th ed. Apson Enterprises, 1974.