Blanckenburg, P. v. (1984). Agricultural extension systems in some African and Asian countries: An analysis of country reports. FAO of the United Nations.
Citazione stile Chigago Style (17a edizione)Blanckenburg, Peter von. Agricultural Extension Systems in Some African and Asian Countries: An Analysis of Country Reports. Rome: FAO of the United Nations, 1984.
Citatione MLA (9a ed.)Blanckenburg, Peter von. Agricultural Extension Systems in Some African and Asian Countries: An Analysis of Country Reports. FAO of the United Nations, 1984.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.