Martin, Ann M., author
Apple Paperback, 1986
Buku Teks
Lovejoy, Arthur O.
Harper Torchbooks, 1960
Buku Teks
Christensen, Ralph, author
American Management Association, 2006
eBooks
Gloor, Peter, author
[American Management Association;, ], 2011
eBooks
Kim, Jong Il, author
Foreign Languages Pub. House, 1982
Buku Teks