APA-viite

Piters, B. d. S. (1995). Diversity of fields and farmers: Explaining yield variations in northern cameroon. Landbouw University.

Chicago-tyylinen lähdeviittaus

Piters, Bart de Steenhuijsen. Diversity of Fields and Farmers: Explaining Yield Variations in Northern Cameroon. Wageningen: Landbouw University, 1995.

MLA-viite

Piters, Bart de Steenhuijsen. Diversity of Fields and Farmers: Explaining Yield Variations in Northern Cameroon. Landbouw University, 1995.