范登贝格 & 冯麦尔. (2017). 大象的难题: Vraag van olifant. 海燕出版社.
Chicago Style (17th ed.) Citation范登贝格 and 冯麦尔. 大象的难题: Vraag Van Olifant. 海燕出版社, 2017.
MLA (8th ed.) Citation范登贝格 and 冯麦尔. 大象的难题: Vraag Van Olifant. 海燕出版社, 2017.
Warning: These citations may not always be 100% accurate.