^Maurer، Maurer (1969). "U.S. Air Service Victory Credits World War I"(PDF). U.S.A.F. Historical Studies No. 133. Maxwell AFB: Historical Research Division, Air University. مؤرشف من الأصل(PDF) في 2012-09-20. اطلع عليه بتاريخ 2012-10-24.
^Above the Trenches: A Complete Record of the Fighter Aces and Units of the British Empire Air Forces 1915–1920, pp. 239—240.
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