Sjam, S., A. Rosmana, D. Rahim, V. Sartika Dewi, and U. Surapati. “Microbial Isolation Derived from Pineapple Extract and Its Application on Cocoa Pod Rot Disease, Phytophthora Palmivora”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), Vol. 30, no. 1, 1, doi:10.22302/iccri.jur.pelitaperkebunan.v30i1.196.