MLA

Pickering, D.C. Farmer-extension-research: a Two-way Continuum for Agricultural and Rural Development. International, 1989.

APA

Pickering, D. (1989). Farmer-extension-research: a two-way continuum for agricultural and rural development. International.

Chicago

Pickering, D.C. Farmer-Extension-Research: a Two-Way Continuum for Agricultural and Rural Development. International, 1989.