Belle Wallace, Dorothy A. Sisk, John Senior, editor
Sage, 2019
Buku Teks
Davis, Gary A., author
Pearson, 2014
Buku Teks
Tomlinson, Carol Ann, editor
Crowin Press, 2004
Buku Teks
edited by Lani Florian
Sage Publications, 2014
Buku Referensi
edited by Michael A. Hogg and Joel Cooper
Sage, 2003
Buku Teks