Chambers, R., Pacey, A., & Thrupp, L. A. (1989). Farmer first: Farmer innovation and agricultural research. Intermediate Technology Publications.
Lua i Stíl Chicago (17ú heag.)Chambers, Robert, Arnold Pacey, agus Lori Ann Thrupp. Farmer First: Farmer Innovation and Agricultural Research. London: Intermediate Technology Publications, 1989.
Lua MLA (8ú heag.)Chambers, Robert, et al. Farmer First: Farmer Innovation and Agricultural Research. Intermediate Technology Publications, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.