APA (7th ed.) Citation

Yankovskyi, O. Y., & Kuchynska, O. P. (2009). Stepan Ivanovych Kovalchuk (the 75th Anniversary).

Chicago Style (17th ed.) Citation

Yankovskyi, O. Y., and O. P. Kuchynska. Stepan Ivanovych Kovalchuk (the 75th Anniversary). 2009.

MLA (8th ed.) Citation

Yankovskyi, O. Y., and O. P. Kuchynska. Stepan Ivanovych Kovalchuk (the 75th Anniversary). 2009.

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