Não informado. (2000). Technical bulletin. Institute for Land and Water Management Research.
Chicagoスタイル(17版)引用形式Não informado. Technical Bulletin. Wageningen, Holanda: Institute for Land and Water Management Research, 2000.
MLA(8版)引用形式Não informado. Technical Bulletin. Institute for Land and Water Management Research, 2000.
警告: この引用は必ずしも正確ではありません.