Haneberg, Lisa, author
American Management Association, 2008
eBooks
Artikel Jurnal
Grellet, Francoise, author
Cambridge University Press, 1981
Buku Teks
Osbeck, Mark K., author
Thomson/West, 2010
Buku Teks
Miro, Carmen A.
Frances Pinter Publ., 1980
Buku Teks