Ruyani, A., S. Sudarwati, and L. A. Sutasurya. “Pengaruh Seng Sulfat Terhadap Perkembangan Tulang Femur Embrio Ayam (Gallus Gallus) Galur Tegel TM 70”. Journal of Mathematical and Fundamental Sciences, vol. 24, no. 1, Jan. 2019, pp. 1-13, https://journals.itb.ac.id/index.php/jmfs/article/view/9493.