Krupska, B. (1976). School and lifelong education. Polish Scientific Publishers.
Style de citation Chicago (17e éd.)Krupska, Beata. School and Lifelong Education. Warsaw: Polish Scientific Publishers, 1976.
Style de citation MLA (9e éd.)Krupska, Beata. School and Lifelong Education. Polish Scientific Publishers, 1976.
Attention : ces citations peuvent ne pas être correctes à 100%.