APA (7e ed.) Bronvermelding

Farming Systems Programme (Botswana) & Norman, D. W. (1994). Farming systems research approach: A primer for eastern and southern Africa. Farming Systems Programme.

Chicago (17e ed.) Bronvermelding

Farming Systems Programme (Botswana) en D. W. Norman. Farming Systems Research Approach: A Primer for Eastern and Southern Africa. Gaborone, Botswana: Farming Systems Programme, 1994.

MLA (8e ed.) Bronvermelding

Farming Systems Programme (Botswana) en D. W. Norman. Farming Systems Research Approach: A Primer for Eastern and Southern Africa. Farming Systems Programme, 1994.