Mateo L. Cabanting, Jr., Concepcion B. Azares, and Solita Evangeline S. Bañez. 2000. “Status and Prospects of Fruit Production in Ilocos Sur”. The Vector: International Journal of Emerging Science, Technology and Management (IJESTM) 9 (1). https://vector.unp.edu.ph/index.php/1/article/view/135.