APA (7th ed.) Citation

Velykochyi, V. S., Kuhutiak, M. V., & Raikivskyi, Y. (2011). Commemorating the 90-th Anniversary of Doctor of History, Professor O.Yu.Karpenko.

Chicago Style (17th ed.) Citation

Velykochyi, V. S., M. V. Kuhutiak, and Ya Raikivskyi. Commemorating the 90-th Anniversary of Doctor of History, Professor O.Yu.Karpenko. 2011.

MLA (8th ed.) Citation

Velykochyi, V. S., et al. Commemorating the 90-th Anniversary of Doctor of History, Professor O.Yu.Karpenko. 2011.

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