Dyfyniad APA

American Institute of Steel Construction. (1980). Manual of steel construction (8th ed.). Cardinal Book Store.

Dyfyniad Arddull Chicago

American Institute of Steel Construction. Manual of Steel Construction. 8th ed. Manila: Cardinal Book Store, 1980.

Dyfyniad MLA

American Institute of Steel Construction. Manual of Steel Construction. 8th ed. Cardinal Book Store, 1980.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.