房龙 & VanLoon. (2003). 房龙传: The Story of Hendrik Willem Van Loon. 北京出版社.
Chicago Style (17th ed.) Citation房龙 i VanLoon. 房龙传: The Story of Hendrik Willem Van Loon. 北京出版社, 2003.
Cita MLA房龙 i VanLoon. 房龙传: The Story of Hendrik Willem Van Loon. 北京出版社, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.