Perry, D. D. J., & Dr. Devern J.Perry. (2001). South-Western spelling reference: 29,000+ words. Cincinnati, Ohio: South-Western Educational Pub.
Trích dẫn kiểu ChicagoPerry, Dr. Devern J., và Dr. Devern J.Perry. South-Western Spelling Reference: 29,000+ Words. Cincinnati, Ohio: South-Western Educational Pub, 2001.
Deismireacht MLAPerry, Dr. Devern J., và Dr. Devern J.Perry. South-Western Spelling Reference: 29,000+ Words. Cincinnati, Ohio: South-Western Educational Pub, 2001.
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