APA-referens (7:e uppl.)

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.

Chicago-referens (17:e uppl.)

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.

MLA-referens (8:e uppl.)

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.