APA (7th ed.) Citation

Hogg, J., & Sebba, J. Profound retardation and multiple impairment. Aspen Publ.

Chicago Style (17th ed.) Citation

Hogg, James, and Judy Sebba. Profound Retardation and Multiple Impairment. Rockville, Md: Aspen Publ.

MLA (9th ed.) Citation

Hogg, James, and Judy Sebba. Profound Retardation and Multiple Impairment. Aspen Publ.

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