Cita APA (7a ed.)

Arnold, I., & Arnold Muftiah. The Secret and hidden history of man. [s.n.].

Cita Chicago Style (17a ed.)

Arnold, Ian, y Arnold Muftiah. The Secret and Hidden History of Man. Alicante: [s.n.].

Cita MLA (9a ed.)

Arnold, Ian, y Arnold Muftiah. The Secret and Hidden History of Man. [s.n.].