Ratnayani, Ketut, AND 		Kusumaningrum, Lia.
" ISOLATION OF PROTEASE ENZYME FROM CHAYOTE FRUIT (Sechium edule (Jacq.) Sw.) WITH AMMONIUM SULFATE FRACTINATION METHOD" <em>International Journal of Biosciences and Biotechnology</em> [Online], Volume 2 Number 2 (19 January 2016)