Latif, Hadri, Koekoeh Santoso, Trioso Purnawarman, Chairul Basri, and Herwin Pisestyani. 2017. “Cortisol Determination in Blood Serum As Stress Indicator in Beef Cattle That Are Slaughtered With or Without Stunning”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 31 (2):178-82. https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/6807.