Bowden, Edwin T.
James Thurber: a bibliography
Ohio State University Press, 1968
Buku Teks
Harris, James C.
Intellectual disability : understanding its development, causes, classification, evaluation, and treatment
Oxford University Press, 2006
Buku Teks
Guidelines for project evaluation Industrial development Organization
United Nations
United Nations, 1972
Buku Teks
Digital media law / Ashley Packard
Blackwell , 2010
eBooks
Education and disability
edited by Susan J. Peters
Garland, 1993
Buku Referensi