Cooray, P. G. (2013). The Geological Sciences in the Service of Nigeria. University of Ife Press.
Cita Chicago (17th ed.)Cooray, P. G. The Geological Sciences in the Service of Nigeria. University of Ife Press, 2013.
Cita MLA (9th ed.)Cooray, P. G. The Geological Sciences in the Service of Nigeria. University of Ife Press, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.