พันธุ์วัฒนา พ. (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. Bangkok, Thailand, 1(2), pp. 60–72. doi: 10.14456/rjhsrmutp.2016.11.