Llaguno, Erickson, Virginia J. Soriano, & Mili-Ann M. Tamayao.
" Improving the Minahang Bayan Declaration Process: A First Step Towards Achieving Sustainability in Philippine Small-Scale Gold Mining Industry." <em>Philippine Engineering Journal</em> [Online], 37.1 (2016): n. pag. Web.  3 Aug. 2025