Du Bois, F. (1915). In Carinthia: Germans and Slovenes. Open letter to Dr. B. De. Jong von Beek en Donk, Secretary General to the Nederandsche Anti-oorlog-rad the Hague. [wydawca nieznany].
Citazione stile Chigago Style (17a edizione)Du Bois, Fred. In Carinthia: Germans and Slovenes. Open Letter to Dr. B. De. Jong Von Beek En Donk, Secretary General to the Nederandsche Anti-oorlog-rad the Hague. [miejsce nieznane]: [wydawca nieznany], 1915.
Citatione MLA (9a ed.)Du Bois, Fred. In Carinthia: Germans and Slovenes. Open Letter to Dr. B. De. Jong Von Beek En Donk, Secretary General to the Nederandsche Anti-oorlog-rad the Hague. [wydawca nieznany], 1915.
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