edited by D. Kolar, S. Pejovnik and M.M. Ristic
Elsevier, 1982
Buku Teks
edited by B. Jakowlew, A. Szymanski, W. Wlosinski
Elsevier, 1981
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Pan Books, 1982
Buku Teks
Seelye, Elwyn E.
New York: John Wiley & Sons, 1954
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper & Row, 1945
Buku Teks