Robinson, H. B. (1965). The mentally retarded child: A psychological approach. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Robinson, Halbert B. The Mentally Retarded Child: A Psychological Approach. New York: McGraw-Hill, 1965.
Lua MLA (9ú heag.)Robinson, Halbert B. The Mentally Retarded Child: A Psychological Approach. McGraw-Hill, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.