Hall, Bradfgord J, author
Thomsonm, 2005
Buku Teks
Samovar, Larry A., author
Thompson/Wadsworth, 2007
Buku Teks
edited by Chibueze C. Udeani ... [et al.]
Council for Research in Values and Philosophy,, 2006
Buku Teks
Samovar, Larry A.
Wadsworth, 1991
Buku Teks
T. Youn-ja Shim
Peter Lang, 2008
Buku Teks