Ward, Richard, author
Prentice-Hall, 1965
Buku Teks
Ward, Richard, author
Prentice-Hall, 1965
Buku Teks
Berg,Hendrik Van den, author
World Scientific, 2016
Buku Teks
Czinkota, Michael R., author
The Dryden Press, 1994
Buku Teks
Mason, R. Hal (Robert Hal), 1929-, author
John Wiley & Sons, 1981
Buku Teks