S. Maulidah, Supriyadi, F. D. Riana, and N. L. Sholehah, MANAJEMEN PERKEBUNAN KELAPA SAWIT RAKYAT (Konsep & Strategi Keberlanjutan). PT. Ghani Press Group, 2026. Accessed: Jul. 22, 2026. [Online]. Available: https://e-book.ghanipress.com/index.php/ghanipress/catalog/book/64