APA ציטוט

Drucker, P. F. (1967). The effective executive. New York: Harper and Row.

Trích dẫn kiểu Chicago

Drucker, Peter F. The Effective Executive. New York: Harper and Row, 1967.

ציטוט MLA

Drucker, Peter F. The Effective Executive. New York: Harper and Row, 1967.