Drucker, P. F. (1971). Men, ideas & politics: Essays. New York: Harper & Row.
Trích dẫn kiểu ChicagoDrucker, Peter F. Men, Ideas & Politics: Essays. New York: Harper & Row, 1971.
MLA引文Drucker, Peter F. Men, Ideas & Politics: Essays. New York: Harper & Row, 1971.
警告：这些引文格式不一定是100％准确.