APA (7th ed.) Citation

Kyrychenko, T. O. (2017). Demographic problems of Sumy region.

Chicago Style (17th ed.) Citation

Kyrychenko, T. O. Demographic Problems of Sumy Region. 2017.

MLA (8th ed.) Citation

Kyrychenko, T. O. Demographic Problems of Sumy Region. 2017.

Warning: These citations may not always be 100% accurate.