Olutiola, P. O. (2013). Man’s Unseen Allies and their Self-Synthesized Tools. Obafemi Awolowo University Press.
Chicago-referens (17:e uppl.)Olutiola, P. O. Man’s Unseen Allies and Their Self-Synthesized Tools. Obafemi Awolowo University Press, 2013.
MLA-referens (9:e uppl.)Olutiola, P. O. Man’s Unseen Allies and Their Self-Synthesized Tools. Obafemi Awolowo University Press, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.