IshartaniD., Elfi.., AndarwulanN., and SyahD., “PEMURNIAN PROTEASE DARI BUAH DAN DAUN MENGKUDU (Morinda citrifolia L.) [Purification of Proteases from Fruits and Leaves of Noni (Morinda citrifolia L.)]”, J. Teknol Industri Pangan, vol. 22, no. 1, p. 78, Jun. 2011.