Dyfyniad APA

Perry, D. D. J., & Dr. Devern J.Perry. (2001). South-Western spelling reference: 29,000+ words. Cincinnati, Ohio: South-Western Educational Pub.

Dyfyniad Arddull Chicago

Perry, Dr. Devern J., và Dr. Devern J.Perry. South-Western Spelling Reference: 29,000+ Words. Cincinnati, Ohio: South-Western Educational Pub, 2001.

Dyfyniad MLA

Perry, Dr. Devern J., và Dr. Devern J.Perry. South-Western Spelling Reference: 29,000+ Words. Cincinnati, Ohio: South-Western Educational Pub, 2001.

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