Levine, Philippa. “Walking the Streets in a Way No Decent Woman Should: Women Police in World War I”. Journal of Modern History, Vol. 66, No. 1, Mar. 1994, pp. 34-78. 39
Chisholm, Hugh, editor. Encyclopædia Britannica. 12th ed., Encyclopædia Britannica Company, 1922, 3 vols. 3: 1044-5
Levine, Philippa. “Walking the Streets in a Way No Decent Woman Should: Women Police in World War I”. Journal of Modern History, Vol. 66, No. 1, Mar. 1994, pp. 34-78. 39
Chisholm, Hugh, editor. Encyclopædia Britannica. 12th ed., Encyclopædia Britannica Company, 1922, 3 vols. 3: 1044-5