Czinkota, Michael R., author
The Dryden Press, 1994
Buku Teks
Mason, R. Hal (Robert Hal), 1929-, author
John Wiley & Sons, 1981
Buku Teks
Wild, John J., author
Prentice Hall International, 2001
Buku Teks
Czinkota, Michael R., author
The Dryden Press, 1992
Buku Teks
Czinkota, Michael R., author
The Dryden Press, 1992
Buku Teks