Åfors, M. (1994). Weeds and weed management in small-scale cropping systems in northern Zambia. Dept. of Crop Production Science, Swedish University of Agricultural Sciences.
Lua i Stíl Chicago (17ú heag.)Åfors, Marie. Weeds and Weed Management in Small-scale Cropping Systems in Northern Zambia. Uppsala: Dept. of Crop Production Science, Swedish University of Agricultural Sciences, 1994.
Lua MLA (8ú heag.)Åfors, Marie. Weeds and Weed Management in Small-scale Cropping Systems in Northern Zambia. Dept. of Crop Production Science, Swedish University of Agricultural Sciences, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.