Cita APA (7a ed.)

Hogg, J., & Sebba, J. (1986). Profound retardation and multiple impairment. Croom Helm.

Cita Chicago Style (17a ed.)

Hogg, J., y Judy Sebba. Profound Retardation and Multiple Impairment. London [etc.]: Croom Helm, 1986.

Cita MLA (9a ed.)

Hogg, J., y Judy Sebba. Profound Retardation and Multiple Impairment. Croom Helm, 1986.