Saputra, A., A. Wulandari, . Ernawati, M. Yusuf, I. Eriswandy, and A. Hidayani. “Masculinization of Guppy Fish (Poecilia Reticulata Peters, 1859) With Extract of Sea Cucumber (Holothuria Scabra)”. Jurnal Iktiologi Indonesia, Vol. 18, no. 2, June 2018, pp. 127-3, doi:10.32491/jii.v18i2.427.