Noermattias Peny
Ichtiar Baru, 1973
Buku Teks
Tator, Rosemary, author
[American Management Association, ], 2011
eBooks
Entrepreneur Press, Ciree Linsenman
Entepreneur Press, 2011
Buku Teks
Jelley, Herbert M., author
McGraw-Hill, 1985
Buku Teks
Diah Eka Ciptarini, author
Restu Agung, 2004
Buku Teks