Dyfyniad APA

JOHNSTON, B. G., & JOHNSTON, B. G. (1980). Basic Steel Design Bruce G. Johnston Et. Al. Prentice-Hall.

Dyfyniad Arddull Chicago

JOHNSTON, Bruce G., and Bruce G. JOHNSTON. Basic Steel Design Bruce G. Johnston Et. Al. Prentice-Hall, 1980.

Dyfyniad MLA

JOHNSTON, Bruce G., and Bruce G. JOHNSTON. Basic Steel Design Bruce G. Johnston Et. Al. Prentice-Hall, 1980.

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