edited by Beth A. Simmons and Richard H. Steinberg
Cambridge University Press, 2006
Buku Teks SO
Jackson, John H.
MIT Press, 1991
Buku Teks SO
Spero, Joan Edelman
Wadsworth, 2010
Buku Teks
Hodgson, John S.
Prentice-Hall, 1983
Buku Teks
Spero, Joan Edelman
Routledge, 1994
Buku Teks