APA (7th ed.) Citation

Holubets, M. A., Kahalo, O. O., & Kozlovskyi, M. P. (2010). Stepan M. Stoyko – the 90th anniversary.

Chicago Style (17th ed.) Citation

Holubets, M. A., O. O. Kahalo, and M. P. Kozlovskyi. Stepan M. Stoyko – the 90th Anniversary. 2010.

MLA (8th ed.) Citation

Holubets, M. A., et al. Stepan M. Stoyko – the 90th Anniversary. 2010.

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