edited by Wendu Nuryanti
Gadjah Mada University Press, 1997
Buku Referensi
Inkson, Clare, author
Sage, 2018
Buku Teks
Teare, Richard
Cassell, 1996
Buku Teks
Cook, Roy A.
Pearson, 2014
Buku Teks
Seaton, A.V.
International Thomson Business Press, 2009
Buku Teks