Rodríguez, S. J. and Rivera-López, C. (1979) “Effects of Three Levels of N, P, K on the Growth of Sander’s Dracaena (D. sanderiana Hort.)”, The Journal of Agriculture of the University of Puerto Rico, 63(2), pp. 229–235. doi: 10.46429/jaupr.v63i2.10280.