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.
Chicago-referens (17:e uppl.)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.
MLA-referens (8:e uppl.)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.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.