Mulato, S., S. Widyotomo, and H. K Purwadaria. “Performance of a Batch System Hydrolic Press for Cocoa Butter Extraction Process”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), Vol. 24, no. 1, May 2008, doi:10.22302/iccri.jur.pelitaperkebunan.v24i1.94.