Stellingwerf, D. A. (1969). The need for forest inventories. Waltman.
Chicagoスタイル(17版)引用形式Stellingwerf, D. A. The Need for Forest Inventories. Delft,: Waltman, 1969.
MLA(8版)引用形式Stellingwerf, D. A. The Need for Forest Inventories. Waltman, 1969.
警告: この引用は必ずしも正確ではありません.