Marcus, Edward, author
Pitman, 1965
Buku Teks
Lowenfeld, Andreas F., author
Matthew Bender, 1983
Buku Teks
Nurkse, Ragnar, 1907-1959, author
Harvard University Press, 1962
Buku Teks
Grunwald, Joseph, author
Bookings Institute, 1985
Buku Teks
edited by Kenichi Ohmae
A Harvard Business Review Book, 1995
Buku Teks