APA (7e ed.) Bronvermelding

Anonymous; Le Queux, W. The German Spy System from Within.

Chicago (17e ed.) Bronvermelding

Anonymous; Le Queux, William. The German Spy System from Within.

MLA (9e ed.) Bronvermelding

Anonymous; Le Queux, William. The German Spy System from Within.

Let op: Deze citaties zijn niet altijd 100% accuraat.