Gearin, Joan. «Movie vs. Reality:». The U.S. National Archives and Records Administration - Winter 2005, Vol. 37, No. 4 National Archives. Վերցված է 2015 թ․ փետրվարի 27-ին. «Georg von Trapp, born in 1880, became a national hero as a captain in the Austrian navy during World War I. He commanded submarines with valor and received the title of "Ritter" and subsequently "baron") as a reward for his heroic accomplishments.»
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Holme, Charles; Eglinton, Guy; Boswell, Peyton; McCormick, William Bernard; Whigham, Henry James (1913). «The International Studio» (անգլերեն). John Lane Company: 240–241. Վերցված է 2018 թ․ մայիսի 9-ին. {{cite journal}}: Cite journal requires |journal= (օգնություն)
Inc., New York Times. «Tribute to Baron von Trapp Joined by Country He Fled». New York Times – 14 July 1997. Վերցված է 2015 թ․ փետրվարի 27-ին. «The ceremonies ended today in a morning Mass, at which the cadets stood watch during a performance of Franz Schubert's German Mass, then laid a wreath at the grave of Baron and Baroness von Trapp, who were portrayed by Christopher Plummer and Julie Andrews in the 1965 film The Sound of Music.» {{cite web}}: |last1= has generic name (օգնություն)
