Majid, Norholis, AND 		Riva'i, Akhmad.
" ISOLASI BIOSURFAKTAN DARI LIMBAH CAIR KELAPA SAWIT : PENDEKATAN METODE EMULSIFICATION ACTIVITY, OIL DISPLACEMENT AREA DAN DROP COLLAPSE" <em>PROSIDING SEMINAR NASIONAL KIMIA</em> [Online], (28 February 2013)