Dyfyniad APA

Sheffield, R. (1980). Floating drilling: :equipment and its use. Gulf publishing.

Dyfyniad Arddull Chicago

Sheffield, Riley. Floating Drilling: :equipment and Its Use. London: Gulf publishing, 1980.

Dyfyniad MLA

Sheffield, Riley. Floating Drilling: :equipment and Its Use. Gulf publishing, 1980.

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