Hartanto, Rudy, Alvian Adhi Pamungkas, Edi Prayitno, and Dian Wahyu Harjanti. 2020. “Milk Production of Holstein Friesian Dairy Cows in Various Lactation Periods (Case Study at Capita Farm, Semarang, Central Java)”. Jurnal Ternak 11 (2):44-49. https://doi.org/10.30736/jy.v11i2.73.