Soonthonsmai, Vuttichat, and Apinya Ingard. “CONCEPTUALIZING KNOWLEDGE, COMPETITIVENESS AND EMERGING COLLABORATIVE TOURISM CLUSTER”. CENTRAL ASIA AND THE CAUCASUS, vol. 23, no. 1, Jan. 2022, pp. 252-6, https://ca-c.org/CAC/index.php/cac/article/view/59.