Roy, S. (1990). Agriculture and technology in developing countries: India and Nigeria. Sage Publications.
Chicago-referens (17:e uppl.)Roy, Sumit. Agriculture and Technology in Developing Countries: India and Nigeria. New Delhi ; Newbury Park: Sage Publications, 1990.
MLA-referens (8:e uppl.)Roy, Sumit. Agriculture and Technology in Developing Countries: India and Nigeria. Sage Publications, 1990.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.