APA (7th ed.) Citation

Irwin, O. C. (1972). Communication variables of cerebral palsied and mentally retarded children. C. C. Thomas.

Chicago Style (17th ed.) Citation

Irwin, Orvis C. Communication Variables of Cerebral Palsied and Mentally Retarded Children. Springfield, Ill.: C. C. Thomas, 1972.

MLA (8th ed.) Citation

Irwin, Orvis C. Communication Variables of Cerebral Palsied and Mentally Retarded Children. C. C. Thomas, 1972.