Sawczuk, Basil, author
E and FN Spon, 1996
Buku Teks
Finkbeiner, Betty Ladley, 1939-, author
Mosby, 1991
Buku Teks
Dyer, William G., author
Addison-Wesley, 1987
Buku Teks
Donnellon, Anne
Harvard Business School Press , 1996
Buku Teks
Knuppel, Robert A.
W.B. Saunders , 1993
Buku Teks