TJITROSEMITO, SOEKISMAN. “THE PERFORMANCE OF SOYBEAN (c.V. Americana) ESTABLISHED BY ZERO TILLAGE TECHNIQUE IN IMPERATA FIELD CONTROLLED BY HERBICIDES”. BIOTROPIA - The Southeast Asian Journal of Tropical Biology, no. 2 (October 10, 2011): 12–17. Accessed January 30, 2023. https://journal.biotrop.org/index.php/biotropia/article/view/92.