Ketchum, M. S. Structural engineers handbook: Data for the design and construction of steel bridges and buildigs.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKetchum, Milo S. Structural Engineers Handbook: Data for the Design and Construction of Steel Bridges and Buildigs.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKetchum, Milo S. Structural Engineers Handbook: Data for the Design and Construction of Steel Bridges and Buildigs.
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