"On the Border of War and Peace. Polish Intelligence and Diplomacy in 1937-1939 and the Origins of the Ultra Secret", Richard A. Woytak, New York 1979 : [recenzja]

Studia Historyczne, Tom 24, Numer 4 (1981) s. 697-698
Andrzej Pankowicz , Richard A. Woytak (aut. dzieła rec.)