MLA

Kirk, Samuel A, and G. Orville Johnson. Educating the Retarded Child. New York: Houghton Mifflin, 1975.

APA

Kirk, S. A, & Johnson, G. Orville. (1975). Educating the retarded child. New York: Houghton Mifflin.

Chicago

Kirk, Samuel A., and G. Orville Johnson. Educating the Retarded Child. New York: Houghton Mifflin, 1975.