“Callus Formation of Coffea Canephora Induced With 2,4 Dichlorophenoxyacetic Acid and Tomato Extract Supplements”. 2023. Pelita Perkebunan (a Coffee and Cocoa Research Journal) 39 (3): 184-200. https://doi.org/10.22302/iccri.jur.pelitaperkebunan.v39i3.565.