United States. Congress & ProQuest (Firm). (1929). some Principles of Air Warfare. Extract from Air Warfare by William C. Sherman. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Congress and ProQuest (Firm). Some Principles of Air Warfare. Extract from Air Warfare by William C. Sherman. [Place of publication not identified]: [publisher not identified], 1929.
MLA (9th ed.) CitationUnited States. Congress and ProQuest (Firm). Some Principles of Air Warfare. Extract from Air Warfare by William C. Sherman. [publisher not identified], 1929.
Warning: These citations may not always be 100% accurate.