Kovalchuk, H. I. (2017). Stepan Yosypovych Petrov – the head of Rare and Valuable Books Department of the State Public Library of Ukrainian SSR (1949–1961).
Chicago-Zitierstil (17. Ausg.)Kovalchuk, H. I. Stepan Yosypovych Petrov – the Head of Rare and Valuable Books Department of the State Public Library of Ukrainian SSR (1949–1961). 2017.
MLA-Zitierstil (8. Ausg.)Kovalchuk, H. I. Stepan Yosypovych Petrov – the Head of Rare and Valuable Books Department of the State Public Library of Ukrainian SSR (1949–1961). 2017.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.