Dyfyniad APA

Wellens, S. J. Houghton Mifflin English grammar and composition. Houghton Mifflin Company.

Dyfyniad Arddull Chicago

Wellens, Sandra J. Houghton Mifflin English Grammar and Composition. Houghton Mifflin Company.

Dyfyniad MLA

Wellens, Sandra J. Houghton Mifflin English Grammar and Composition. Houghton Mifflin Company.

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