卢普. (2009). 心理的动机原理: Principle of psychological motive. 北京出版社.
Chicago Style (17th ed.) Citation卢普. 心理的动机原理: Principle of Psychological Motive. 北京出版社, 2009.
Cita MLA卢普. 心理的动机原理: Principle of Psychological Motive. 北京出版社, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.