Não informado. (1971). Ag chem and commercial fertilizer. Industry Publications.
Chicagoスタイル(17版)引用形式Não informado. Ag Chem and Commercial Fertilizer. Cedar Grove, NJ: Industry Publications, 1971.
MLA(8版)引用形式Não informado. Ag Chem and Commercial Fertilizer. Industry Publications, 1971.
警告: この引用は必ずしも正確ではありません.