APA (7th ed.) Citation

Speirs, M. (1992). Indigenous integrated farming systems in the Sahel. World Bank.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Speirs, Mike. Indigenous Integrated Farming Systems in the Sahel. World Bank, 1992.