Liu, Jia, author
Chandos Publishing, 2007
Buku Teks
Haworth Press, 1984
Buku Referensi
Lankes, R. David, author
Facet Publishing, 2003
Buku Teks
Kern, M. Kathleen, author
[American Management Association, ], 2009
eBooks
McMenemy, David, author
Facet, 2006
Buku Referensi