Artikel Jurnal
Koontz, Harold, author
Erlangga, 1989
Buku Teks
Stoner, James A.F. (Arthur Finch), author
Intermedia, 1986
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
LPPM dan Gramedia, 1978
Buku Teks
Robbins, Stephen P., author
Prenhallindo, 1999
Buku Teks