Foja, A., R. Gervacio, and E. Largueza. “Agronomic Characteristics of Three Varieties of Bell Pepper As Affected by the Same Level of Different Organic Fertilizers”. Romblon State University Research Journal, vol. 1, no. 1, June 2011, pp. 74-80, https://akingpamana.com/index.php/rsurj/article/view/23.