UI-Press, 2002
UI - Publikasi
Graduate School of Business, Stanford University, 1959
Buku Teks
McCorkle, Chester O., author
Jossey-Bass Publishers, 1982
Buku Teks
Asa S. Knowles, editor-in-chief.
McGraw-Hill, 1970
Buku Referensi
Eble, Kenneth E., author
Jossey-Bass, 1978
Buku Referensi