Gaya APA

JR., E, H, G., HAYLORD, C, N. (1972). DESIGN OF STEEL STRUCTURES SECOND EDITION . United States of America: McGraw Hill.

Gaya MLA

JR., EDWIN, H., GAYLORD,., HAYLORD, CHARLES, N.. "DESIGN OF STEEL STRUCTURES SECOND EDITION". United States of America: McGraw Hill, 1972. Text.