APA (7th ed.) Citation

Stoiko, S. M., & Barna, M. M. (2009). Volodymyr I. Chopyk — the 80th Anniversary.

Chicago Style (17th ed.) Citation

Stoiko, S. M., and M. M. Barna. Volodymyr I. Chopyk — the 80th Anniversary. 2009.

MLA (8th ed.) Citation

Stoiko, S. M., and M. M. Barna. Volodymyr I. Chopyk — the 80th Anniversary. 2009.

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