APA (7th ed.) Citation

Sytnyk, K. M., Sheliah-Sosonko, Y. R., Vasser, S. P., & Dudka, I. O. (2004). Colleague, friend, and companion.

Chicago Style (17th ed.) Citation

Sytnyk, K. M., Yu. R. Sheliah-Sosonko, S. P. Vasser, and I. O. Dudka. Colleague, Friend, and Companion. 2004.

MLA (8th ed.) Citation

Sytnyk, K. M., et al. Colleague, Friend, and Companion. 2004.

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