Rudenko, L. H. (2019). Professor O. G. Topchiev and his activities in Geography.
Chicago Style (17th ed.) CitationRudenko, L. H. Professor O. G. Topchiev and His Activities in Geography. 2019.
MLA (8th ed.) CitationRudenko, L. H. Professor O. G. Topchiev and His Activities in Geography. 2019.
Warning: These citations may not always be 100% accurate.