Drucker, P. F. (1989). The New Realities. Harper $ Row.
芝加哥风格引文Drucker, Peter F. The New Realities. New York: Harper $ Row, 1989.
MLA引文Drucker, Peter F. The New Realities. Harper $ Row, 1989.
警告：这些引文格式不一定是100％准确.
APA引文
Drucker, P. F. (1989). The New Realities. Harper $ Row.
芝加哥风格引文Drucker, Peter F. The New Realities. New York: Harper $ Row, 1989.
MLA引文Drucker, Peter F. The New Realities. Harper $ Row, 1989.