edited by C.R. Snyder and Shane J. Lopez
Oxford University Press, 2005
Buku Teks
Matlin, Margaret W., author
Harcourt Brace College Publisher, 1999
Buku Teks
edited by Nicola J. Petty ; foreword by Alison Rushton
Churchill Livingstone Elsevier, 2011
Buku Teks
Benoît, Hubert, author
International Specialized Book, 1955
Buku Teks
Burke, Kay, author
Hawker Brownlow Education, 1999
Buku Teks