Strang, R. M. (1965). Understanding and helping the retarded reader. University of Arizona Press.
Lua i Stíl Chicago (17ú heag.)Strang, Ruth May. Understanding and Helping the Retarded Reader. Tucson: University of Arizona Press, 1965.
Lua MLA (9ú heag.)Strang, Ruth May. Understanding and Helping the Retarded Reader. University of Arizona Press, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.