Geography, D. o. (2019). Soil Geogrphy. Obafemi Awolowo University.
Cita Chicago (17th ed.)Geography, Department of. Soil Geogrphy. Obafemi Awolowo University, 2019.
Cita MLA (9th ed.)Geography, Department of. Soil Geogrphy. Obafemi Awolowo University, 2019.
Atenció: Aquestes cites poden no estar 100% correctes.