Djangaopa, J. T., Mambu, S. M. and Nio, S. A. (2020) “Variations in Leaf Chlorophyll Concentration in Croton Plants (Codiaeum variegatum L.) Cultivar Gelatik at a Different Leaf Age”, Jurnal Ilmiah Sains, 20(2), pp. 78–87. doi: 10.35799/jis.20.2.2020.28397.