Fenty Maimunah Simbolon, Muhammad Rizwan, Noverina Chaniago, and Surya Agus Efendy. “GROWTH RESPONSE OF SOYBEAN ( Glycine Max (L) TO NPK FERTILIZER AND BIO FERTILIZER”. International Journal of Educational Research Excellence (IJERE) (December 10, 2020): 1–7. Accessed May 19, 2024. https://ejournal.ipinternasional.com/index.php/ijere/article/view/648.