Стиль цитування APA (7-ме видання)

Vlasyk, H. M., Shkapa, V. V., & Zamrii, I. V. (2019). Estimates of the best orthogonal trigonometric approximations and orthoprojective widths of the classes of periodic functions of many variables in a uniform metric.

Чикаго стиль цитування (17-те видання)

Vlasyk, H. M., V. V. Shkapa, та I. V. Zamrii. Estimates of the Best Orthogonal Trigonometric Approximations and Orthoprojective Widths of the Classes of Periodic Functions of Many Variables in a Uniform Metric. 2019.

Стиль цитування MLA (8-ме видання)

Vlasyk, H. M., et al. Estimates of the Best Orthogonal Trigonometric Approximations and Orthoprojective Widths of the Classes of Periodic Functions of Many Variables in a Uniform Metric. 2019.