David Vlahov, author
Jossey-Bass, 2010
Buku Teks
Curtis, Sarah, author
Edward Arnold, 1996
Buku Teks
Hardy, Margaret E.
Appleton-century-crofts , 1978
Buku Teks
edited by D.R. Rutter, and Lyn Quine
Avebury, 1994
Buku Teks
James A. Johnson, Carleen H. Stoskopf
Jones and Bartlett Publishers, 2010
Buku Teks