Ketchompu, D., P. Jhundra-indra, and K. Pratoom. “Antecedents of Marketing Diversity Strategy: An Empirical Investigation of Hotel Businesses in Thailand”. Ph.D. In Social Sciences Journal, vol. 8, no. S, Oct. 2018, pp. 279-97, https://so05.tci-thaijo.org/index.php/phdssj/article/view/135828.