APA (7th ed.) Citation

Horbachuk, V. M., Syrku, A. A., & Suleimanov, S. (2019). Theory for organization of contests.

Chicago Style (17th ed.) Citation

Horbachuk, V. M., A. A. Syrku, and S.-B Suleimanov. Theory for Organization of Contests. 2019.

MLA (8th ed.) Citation

Horbachuk, V. M., et al. Theory for Organization of Contests. 2019.