APA引文

Drucker, P. F. (1980). Managing in turbulent times. London: Heinemann.

Trích dẫn kiểu Chicago

Drucker, Peter F. Managing in Turbulent Times. London: Heinemann, 1980.

MLA引文

Drucker, Peter F. Managing in Turbulent Times. London: Heinemann, 1980.

警告：這些引文格式不一定是100％准確.