Sihaloho, A. N., and W. Sitinjak. “VARIOUS IMPACTS OF DOSAGE AND TIME OF BIO-ORGANIC FERTILIZER APPLICATION TO THE GROWTH AND PRODUCTION OF SHALLOT (Allium Ascalonicum L.)”. IJO - International Journal of Agriculture and Research ( ISSN 2814-189X ), Vol. 3, no. 02, Feb. 2020, pp. 11-17, http://ijojournals.com/index.php/ar/article/view/295.