บุญรอด ม. 2019. THE EFFECT OF PRODUCT INNOVATION AND SERVICE PROCESS INNOVATION ON MARKETING PERFORMANCE OF 3 TO 4 STARS HOTEL BUSINESSES IN THAILAND. Research Community and Social Development Journal. 13, 3 (Sep. 2019), 225–236. DOI:https://doi.org/10.14456/nrru-rdi.2019.58.