请检查|date=中的日期值 (帮助) Enzo & Paolo Matricardi, Angelucci, World Aircraft: World War II, Volume I (SampsonLow Guides), SampsonLow, 1978, ISBN 0-562-00096-8 (英语)
苏联承诺废除此前和纳粹德国签署的所有条约。 Stanislaw Mikolajczyk The Pattern of Soviet Domination, SampsonLow, Marston & Co 1948, Page 17 Jozef Garlinski Poland in the Second World
1959-60, SampsonLow, Marston & Company Ltd., London, 1959, S. 321 f. John W.R. Taylor (Hrsg.): Jane's All The World's Aircraft - 1965-66, SampsonLow, Marston