Sanni, S. (2013). A Catalogue of Alternatives. Obafemi Awolowo University Press.
Cita Chicago (17th ed.)Sanni, S.A. A Catalogue of Alternatives. Obafemi Awolowo University Press, 2013.
Cita MLA (9th ed.)Sanni, S.A. A Catalogue of Alternatives. Obafemi Awolowo University Press, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.