JD Colwell. (1994). Estimating fertilizer requirements: A quantitative approach. CAB International.
Chicago Edition CitationJD Colwell. Estimating Fertilizer Requirements: A Quantitative Approach. UK: CAB International, 1994.
MLA Edition CitationJD Colwell. Estimating Fertilizer Requirements: A Quantitative Approach. CAB International, 1994.
Warning: These citations may not always be 100% accurate.