พันธุ์วัฒนา พิชศาล. 2018. “The Principles of POLC to Significant Influence with The business of Breeding red-whiskered bulbul in shelters”. RMUTP Research Journal Humanities and Social Sciences 1 (2). Bangkok, Thailand:60-72. https://doi.org/10.14456/rjhsrmutp.2016.11.