Giller, K. E. (2001). Nitrogen Fixation in Tropical cropping systems (2.). CAB International.
Chicago Edition CitationGiller, Ken E. Nitrogen Fixation in Tropical Cropping Systems. 2. U.K: CAB International, 2001.
MLA Edition CitationGiller, Ken E. Nitrogen Fixation in Tropical Cropping Systems. 2. CAB International, 2001.
Warning: These citations may not always be 100% accurate.