Tsybulskyi, V. O. (2015). Nature study of demand and supply market travel services and factors of affecting them.
Чикаго стиль цитування (17-те видання)Tsybulskyi, V. O. Nature Study of Demand and Supply Market Travel Services and Factors of Affecting Them. 2015.
Стиль цитування MLA (8-ме видання)Tsybulskyi, V. O. Nature Study of Demand and Supply Market Travel Services and Factors of Affecting Them. 2015.
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