Upawansa, G. (2000). Small-scale integrated farming: A practical manual. Rome: FAO.
Chicago Style aipamenaUpawansa, G.K. Small-scale Integrated Farming: A Practical Manual. Rome: FAO, 2000.
MLA aipamenaUpawansa, G.K. Small-scale Integrated Farming: A Practical Manual. Rome: FAO, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.