RamadhantiA. R., PuspitaN. O. J., RefaltaC. F., KurniantoH., and SaragihH. T. S. “Performance of Male Layer Fed Ration Containing Green Algae (Spirogyra Jaoensis) Extract”. Tropical Animal Science Journal, Vol. 44, no. 1, Mar. 2021, pp. 100-7, doi:10.5398/tasj.2021.44.1.100.