欧文斯. (2010). 人类自然奥秘: Mysterious appearance & unfathomable enigma. 兵器工业出版社.
Lua i Stíl Chicago (17ú heag.)欧文斯. 人类自然奥秘: Mysterious Appearance & Unfathomable Enigma. 兵器工业出版社, 2010.
Lua MLA (8ú heag.)欧文斯. 人类自然奥秘: Mysterious Appearance & Unfathomable Enigma. 兵器工业出版社, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.