Coutouvidis 1984, p. 285. Coutouvidis, John (October 1984). "Government-in-Exile: The Transfer of Polish Authority Abroad in September 1939". Review of International Studies. 10 (4): 285–296. doi:10.1017/S0260210500116316.
Coutouvidis 1984, p. 285-286. Coutouvidis, John (October 1984). "Government-in-Exile: The Transfer of Polish Authority Abroad in September 1939". Review of International Studies. 10 (4): 285–296. doi:10.1017/S0260210500116316.
Coutouvidis 1984, p. 286. Coutouvidis, John (October 1984). "Government-in-Exile: The Transfer of Polish Authority Abroad in September 1939". Review of International Studies. 10 (4): 285–296. doi:10.1017/S0260210500116316.
economist.com
"A Killing Field". The Economist. 5 September 2019. Retrieved 9 January 2021.
"The mass extermination of Jews in German occupied Poland, Note addressed to the Governments of the United Nations on December 10, 1942" published later (30 December 1942) by the Polish Foreign Ministry as a brochure distributed to politicians and the medias : http://www.projectinposterum.org/docs/mass_extermination.htm
