APA (7th ed.) Citation

Sytnyk, K. M., Rykovskyi, H. F., Dudka, I. O., Hapiienko, O. S., & Belomesiatseva, D. B. (2014). Viktor Ivanovich Parfenov – 80th Anniversary.

Chicago Style (17th ed.) Citation

Sytnyk, K. M., H. F. Rykovskyi, I. O. Dudka, O. S. Hapiienko, and D. B. Belomesiatseva. Viktor Ivanovich Parfenov – 80th Anniversary. 2014.

MLA (8th ed.) Citation

Sytnyk, K. M., et al. Viktor Ivanovich Parfenov – 80th Anniversary. 2014.

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