Bishop, D. V. M., author
Psychology Press, 2000
Buku Teks
Dorothy V.M. Bishop, Laurence B. Leonard
Psychology Press , 2001
Buku Teks
edited by Jack S. Damico, Nicole Muller and Martin J. Ball
Wiley-Blackwell, 2013
Buku Teks
Coleman, John R., author
Cambridge University Press, 2005
Buku Teks
Devito, Joseph A., author
Random House, 1970
Buku Teks