Queiroz, M. A., J. P. Araújo, and R. C. S. Dias. “Genetic Variability in Samples of Watermelon, Cirtullus Lanatus (Thunb.) Matsum & Nakai, Collected in Six Counties of the Dry Areas of Northeast Brazil”. SITIENTIBUS série Ciências Biológicas, vol. 2, no. 1/2, June 2002, pp. 44-48, doi:10.13102/scb8234.