Pattaraporn Weeranakin and Buapun Promphakping
International Business Management 11 ( 6 ): 1336 - 1342 , 2017
Surasak Wonginchan and Buapun Promphakping
International Business Management 12 ( 2 ): 126 - 131 , 2018
Pornpen Somaboot and Buapun Promphakping
Research Journal of Applied Sciences 12 ( 5 ): 343 - 351 , 2017
Pathumthip Mankhoksoong and Buapun Promphakping
The Social Sciences 11 ( 23 ): 5752 - 5755 , 2016
Buapun Promphakping, Nopparat Rattanaprathum, Pornpen Somaboot, Ninlawadee Promphakping and Pattaraporn Weeranakin
The Social Sciences 12 ( 10 ): 1854 - 1859 , 2017
Pornpen Somaboot and Buapun Promphakping
The Social Sciences 13 ( 2 ): 434 - 441 , 2018