Delgado, C. L. (1978). An investigation of the lack of mixed farming in the West African Savannah: A farming systems approach for Tenkodogo, Upper Volta. Center for Research on Economic Development, University of Michigan.
Lua i Stíl Chicago (17ú heag.)Delgado, Christopher Linn. An Investigation of the Lack of Mixed Farming in the West African Savannah: A Farming Systems Approach for Tenkodogo, Upper Volta. Ann Arbor: Center for Research on Economic Development, University of Michigan, 1978.
Lua MLA (8ú heag.)Delgado, Christopher Linn. An Investigation of the Lack of Mixed Farming in the West African Savannah: A Farming Systems Approach for Tenkodogo, Upper Volta. Center for Research on Economic Development, University of Michigan, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.