APA Citation

Speirs, M., & Olsen, O. (1992). Indigenous integrated farming systems in the Sahel. Washington, D.C.: World Bank, 1992.

Chicago Style Citation

Speirs, Mike, and Ole Olsen. Indigenous Integrated Farming Systems in the Sahel. Washington, D.C.: World Bank, 1992, 1992.

MLA Citation

Speirs, Mike, and Ole Olsen. Indigenous Integrated Farming Systems in the Sahel. Washington, D.C.: World Bank, 1992, 1992.

Warning: These citations may not always be 100% accurate.