De Wulf, R. 374/1.1: Briefwisseling & reeksen kabinetsnota's.
Chicagoスタイル(17版)引用形式De Wulf, Roger. 374/1.1: Briefwisseling & Reeksen Kabinetsnota's.
MLA(8版)引用形式De Wulf, Roger. 374/1.1: Briefwisseling & Reeksen Kabinetsnota's.
警告: この引用は必ずしも正確ではありません.