HIDAYANI, A.; FUJAYA, Y.; TRIJUNO, D.; ASLAMYAH, S. Cow’s testicles flour as the natural hormone masculinization of Siamese fighting fish, Betta splendens Regan, 1910. Jurnal Iktiologi Indonesia, v. 16, n. 1, p. 91-101, 15 fev. 2016.