edited by Ian Tebbett
Ellis Horwood, 1992
Buku Teks
Houck, Max M.
Academic Press, 2011
Buku Teks
Saferstein, Richard
Prentice-Hall, 1995
Buku Teks
edited by J.C. Upshaw Downs, Anjali Ranadive Swienton
Academic, 2012
Buku Teks
Ellis, Janice Rider
Hoghton Mifflin, 1977
Buku Teks