Buzacoot, Martin, author
Routledge, 1991
Buku Teks
Kagan, Shelly, author
Yale University Press, 2012
Buku Teks
Kagan, Shelly, author
Yale University Press, 2012
Buku Teks
Ott, Bill, author
[American Management Association;, ], 2009
eBooks
Wachlin, Steven, author
KITLV Press, 1994
Buku Referensi