Cita APA

Perry, D. J., & Devern J. Perry. South-Western spelling reference: 29,000+ words. Clifton Park: Cengage Learning, Inc.

Chicago Style Citation

Perry, Devern J., i Devern J. Perry. South-Western Spelling Reference: 29,000+ Words. Clifton Park: Cengage Learning, Inc.

Cita MLA

Perry, Devern J., i Devern J. Perry. South-Western Spelling Reference: 29,000+ Words. Clifton Park: Cengage Learning, Inc.