APA (7th ed.) Citation

Westling David L. (1986). Introduction to mental retardation. Prentice-Hall.

Chicago Style (17th ed.) Citation

Westling David L. Introduction to Mental Retardation. New Jersey: Prentice-Hall, 1986.

MLA (9th ed.) Citation

Westling David L. Introduction to Mental Retardation. Prentice-Hall, 1986.

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