Ariyanti, M., S. Rosniawaty, I. R. Dewi, and A. Fernando. “The Growth Response of Oil Palm Seedling at Main Nursery Against Watering at Different Volume and Frequency and Against Provision of Compost”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 37, no. 3, Apr. 2018, pp. 226-33, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8645.