MLA

Duvel, Gustav H, and Charles Annor-Frempong. The Comparative Role of Intervening Variables In Understanding Farmers' Adoption Behavior. International, 2009.

APA

Duvel, G. H, & Annor-Frempong, C. (2009). The comparative role of intervening variables in understanding farmers' adoption behavior. International.

Chicago

Duvel, Gustav H., and Charles Annor-Frempong. The Comparative Role of Intervening Variables In Understanding Farmers' Adoption Behavior. International, 2009.