Wiangin, Nanthanut, 		Sukkrong, Jiraporn, 		Kaewkamjan, Kanaporn, 		Phonkamjad, Wanwipang, 		Promchitta, Viyada, AND 		Phanon, Wichien.
" Verb to be in Progressive Tense in American English" <em>วารสารพุทธปรัชญาวิวัฒน์</em> [Online], Volume 6 Number 2 (23 June 2022)