APA (7th ed.) Citation

Koch, R., & Koch, K. J. (1974). Understanding the mentally retarded child: A new approach. Random House.

Chicago Style (17th ed.) Citation

Koch, Richard, and Kathryn Jean Koch. Understanding the Mentally Retarded Child: A New Approach. New York: Random House, 1974.

MLA (9th ed.) Citation

Koch, Richard, and Kathryn Jean Koch. Understanding the Mentally Retarded Child: A New Approach. Random House, 1974.

Warning: These citations may not always be 100% accurate.