Não informado. (1974). Journal of Rural Economics and Development. University of Ibadan, Department of Agricultural Extension Services.
Citace podle Chicago (17th ed.)Não informado. Journal of Rural Economics and Development. Ibadan, Nigeria: University of Ibadan, Department of Agricultural Extension Services, 1974.
Citace podle MLA (8th ed.)Não informado. Journal of Rural Economics and Development. University of Ibadan, Department of Agricultural Extension Services, 1974.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..