Waller, D. C., & Heller, J. (2011). Wild Bill Donovan: The spymaster who created the OSS and modern American espionage (Retail ed. ; Unabridged.). Tantor Media.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWaller, Douglas C., और Johnny Heller. Wild Bill Donovan: The Spymaster Who Created the OSS and Modern American Espionage. Retail ed. ; Unabridged. [Old Saybrook, Ct.]: Tantor Media, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWaller, Douglas C., और Johnny Heller. Wild Bill Donovan: The Spymaster Who Created the OSS and Modern American Espionage. Retail ed. ; Unabridged. Tantor Media, 2011.
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