APA-Zitierstil (7. Ausg.)

(1986). International directory of mental retardation resources (3. ed.). U.S. Dep. of Health and Human Services.

Chicago-Zitierstil (17. Ausg.)

International Directory of Mental Retardation Resources. 3. ed. Washington, D.C: U.S. Dep. of Health and Human Services, 1986.

MLA-Zitierstil (9. Ausg.)

International Directory of Mental Retardation Resources. 3. ed. U.S. Dep. of Health and Human Services, 1986.