Lauro B. Tacbas, Mariana P. De Vera, and Necy Cesaria V. Romo. “The Effectiveness Ofthe Extension Programs of the University of Northern Philippines School Year 2005-2008”. The Vector: International Journal of Emerging Science, Technology and Management (IJESTM), vol. 19, no. 1, Dec. 2010, doi:10.69566/ijestm.v19i1.240.