Overbeek, J. (1970). Comparative thoughts on overpopulation between the two world wars. Drukkerij Princo.
Chicagoスタイル(17版)引用形式Overbeek, Johannes. Comparative Thoughts on Overpopulation Between the Two World Wars. Rotterdam: Drukkerij Princo, 1970.
MLA(8版)引用形式Overbeek, Johannes. Comparative Thoughts on Overpopulation Between the Two World Wars. Drukkerij Princo, 1970.
警告: この引用は必ずしも正確ではありません.