Parker, H. (1974). Simplified design of structural steel (4th ed.). Apson Enterprises.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रParker, Harry. Simplified Design of Structural Steel. 4th ed. Quezon City: Apson Enterprises, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रParker, Harry. Simplified Design of Structural Steel. 4th ed. Apson Enterprises, 1974.
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