MLA

Sumberg, James, and Christine Okali. Farmers' Experiments: Creating Local Knowledge. International: Lynne Rienner Publishers, Boulder, Colorado, 1997.

APA

Sumberg, J., & Okali, C. (1997). Farmers' experiments: creating local knowledge. International: Lynne Rienner Publishers, Boulder, Colorado.

Chicago

Sumberg, James, and Christine Okali. Farmers' Experiments: Creating Local Knowledge. International: Lynne Rienner Publishers, Boulder, Colorado, 1997.