Ferdinand J. Lamarca, Rolando R. Ragasa, and Christopher F. Bueno. 2013. “Rapid Economic Appraisal in the Municipality of Tagudin, Ilocos Sur: Concepts, Methods, and Lessons Learned”. The Vector: International Journal of Emerging Science, Technology and Management (IJESTM) 22 (1). https://doi.org/10.69566/ijestm.v22i1.259.