APA (7th ed.) Citation

Copeland, R. H., Schiefelbusch, R. L., & Smith, J. O. (1967). Language and mental retardation, empirical and conceptual considerations. Holt, Rinehart and Winston.

Chicago Style (17th ed.) Citation

Copeland, Ross H., Richard L. Schiefelbusch, and James O. Smith. Language and Mental Retardation, Empirical and Conceptual Considerations. New York: Holt, Rinehart and Winston, 1967.

MLA (9th ed.) Citation

Copeland, Ross H., et al. Language and Mental Retardation, Empirical and Conceptual Considerations. Holt, Rinehart and Winston, 1967.