ASTUTI P, YUSUF TL, HAYES E, MAHESHWARI H, SJAHFIRDI L, SAJUTHI D. Diurnal Patterns of Testosterone and Cortisol Metabolites in Fecal of Javan Gibbons (Hylobates moloch) in Captivity. HAYATI J Biosci. 2009;13(2):69. doi:10.4308/hjb.13.2.69