“INCOME OVER FEED COST AYAM KUB DENGAN PENAMBAHAN LIMBAH KULIT KOPI FERMENTASI”, STAP, vol. 12, pp. 171–179, Jan. 2026, Accessed: Jun. 21, 2026. [Online]. Available: http://jnp.fapet.unsoed.ac.id/index.php/psv/article/view/1297