欧文斯. (2010). 人类自然奥秘: Mysterious appearance & unfathomable enigma. 兵器工业出版社.
Chicago (17e ed.) Bronvermelding欧文斯. 人类自然奥秘: Mysterious Appearance & Unfathomable Enigma. 兵器工业出版社, 2010.
MLA (8e ed.) Bronvermelding欧文斯. 人类自然奥秘: Mysterious Appearance & Unfathomable Enigma. 兵器工业出版社, 2010.
Let op: Deze citaties zijn niet altijd 100% accuraat.