Dyfyniad APA

Keown, R. M. (1912). Mechanism. McGraw-Hill book company, inc..

Dyfyniad Arddull Chicago

Keown, Robert McArdle. Mechanism. New York [etc.]: McGraw-Hill book company, inc., 1912.

Dyfyniad MLA

Keown, Robert McArdle. Mechanism. McGraw-Hill book company, inc., 1912.

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