توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

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.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

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.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

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.