1. Abubakar, Syaubari dan Syahidin. 1998. Fermentasi Minyak Kelapa Dengan Enzim Papain Kasar. Fakultas Teknik. Universitas Syiah Kuala. Aceh.
2. AOCS. 1969. Official and tentative methods of American Oil chemists’ Society (AOCS). 3rd edition, AOCS Press, USA.
3. BIS. 1994. Indian Standard methods of sampling and test for oils and fats (revised), BIS New Delhi, India.
4. Separation of the oil and protein fractions in coconut (Cocos nucifera linn.) by fermentation
5. F.M. Christensen, 1989. Enzyme technology versus engineering technology in the food industry. Biotechnology and Applied Biochemistry 11: 249–265.