APA (7th ed.) Citation

Kovalchuk, H. (1999). Ukrainian bibliographers of the XXth century.

Chicago Style (17th ed.) Citation

Kovalchuk, H. Ukrainian Bibliographers of the XXth Century. 1999.

MLA (8th ed.) Citation

Kovalchuk, H. Ukrainian Bibliographers of the XXth Century. 1999.

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