., P., A. Budiani, and S. Mawardi. “Confirmation of Transgenic Robusta Coffee (Coffea Canephora) Transformed by Chitinase-Encoding Gene and Its Propagation Through Somatic Embryogenesis”. Pelita Perkebunan (a Coffee and Cocoa Research Journal), Vol. 21, no. 2, Aug. 2005, doi:10.22302/iccri.jur.pelitaperkebunan.v21i2.16.