Kasiyati, M. A. Djaelani, and Sunarno, “Effect of Supplementation of Moringa oleifera Leaf Powder on Reproductive Performance and Ovarian Morphometry of Pengging Ducks”, Int. J. Poult. Sci., vol. 18, no. 7, pp. 340–348, Jun. 2019, doi: 10.3923/ijps.2019.340.348.