A. P. Dewi, E. Zaini, and A. Djamaan, “MANUFACTURE OF PLASTICS FILM CONTAINING OF POLYSTIRENE, POLYCAPROLACTONE, POLY(3-HIDROKSIBUTYRATE-CO-3- HIDROXYVALERATE) AND BIODEGRADATION STUDY IN OCEAN WATER”, J.Ris.Kim., vol. 7, no. 2, p. 107, Mar. 2014.