International Colloquium on Methodology of Sciences Warszawa. (1965). The foundation of statements and decisions: Proceedings of the International Colloquium on Methodology of Sciences held in Warsaw, 18-23 September 1961. PWN-Polish Scientific Publishers.
Cytowanie według stylu Chicago (wyd. 17)International Colloquium on Methodology of Sciences Warszawa. The Foundation of Statements and Decisions: Proceedings of the International Colloquium on Methodology of Sciences Held in Warsaw, 18-23 September 1961. Warszawa: PWN-Polish Scientific Publishers, 1965.
Cytowanie według stylu MLA (wyd. 9)International Colloquium on Methodology of Sciences Warszawa. The Foundation of Statements and Decisions: Proceedings of the International Colloquium on Methodology of Sciences Held in Warsaw, 18-23 September 1961. PWN-Polish Scientific Publishers, 1965.