Não informado. (1960). Bibliography. International Institute for Land Reclamation and Improvement.
Chicagoスタイル(17版)引用形式Não informado. Bibliography. Wageningen, Holanda: International Institute for Land Reclamation and Improvement, 1960.
MLA(8版)引用形式Não informado. Bibliography. International Institute for Land Reclamation and Improvement, 1960.
警告: この引用は必ずしも正確ではありません.