Não informado. (1987). Nigerian Journal of Palms and Oil Seeds. Nigerian Institute for Oil Palm Research.
Cita Chicago Style (17a ed.)Não informado. Nigerian Journal of Palms and Oil Seeds. Benin City, Nigeria: Nigerian Institute for Oil Palm Research, 1987.
Cita MLA (8a ed.)Não informado. Nigerian Journal of Palms and Oil Seeds. Nigerian Institute for Oil Palm Research, 1987.
Precaución: Estas citas no son 100% exactas.