Dyfyniad APA

BOWELS, J. E. (1988). Foundation analysis and design.-- Ed.4. McGraw-Hill Book.

Dyfyniad Arddull Chicago

BOWELS, Jaseph E. Foundation Analysis and Design.-- Ed.4. Singapore: McGraw-Hill Book, 1988.

Dyfyniad MLA

BOWELS, Jaseph E. Foundation Analysis and Design.-- Ed.4. McGraw-Hill Book, 1988.

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