(美)理查德·科克(Richard Koch)著. (2015). 80/20生活法则. 电子工业出版社.
Chicago Style (17th ed.) Citation(美)理查德·科克(Richard Koch)著. 80/20生活法则. 电子工业出版社, 2015.
MLA (8th ed.) Citation(美)理查德·科克(Richard Koch)著. 80/20生活法则. 电子工业出版社, 2015.
Warning: These citations may not always be 100% accurate.