edited by Brian L. Cutler
Sage, 2008
Buku Referensi
Taylor, Sandie
Routledge, 2019
Buku Teks SO
Arrigo, Bruce A.
Academic Press, 2003
Buku Teks SO
Wrightsman, Lawrence S.
Brooks/Cole , 1998
Buku Teks
Wrightsman, Lawrence S.
Brooks/Cole, 1991
Buku Teks