Kistenfeger, S., and W. Vinitwatanakhun. “The Relationship Between Foreign Teachers’ Perception of Leadership Styles and Motivation at Assumption College Bangrak Campus, Bangkok”. Scholar: Human Sciences, vol. 10, no. 2, Dec. 2018, p. 94, http://www.assumptionjournal.au.edu/index.php/Scholar/article/view/2632.