Isichei, A. O. (2014). Vegetation. Nigerian Environmental Study/Action Team.
Cita Chicago (17th ed.)Isichei, A. O. Vegetation. Nigerian Environmental Study/Action Team, 2014.
Cita MLA (9th ed.)Isichei, A. O. Vegetation. Nigerian Environmental Study/Action Team, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.