Halstead, L. B. (2013). Ife and Biology. Obafemi Awolowo University Press.
Cita Chicago (17th ed.)Halstead, L. B. Ife and Biology. Obafemi Awolowo University Press, 2013.
Cita MLA (9th ed.)Halstead, L. B. Ife and Biology. Obafemi Awolowo University Press, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.