O. Grimaldo-Juárez, Ángel M. Súarez-Hernández, C. Ceceña-Durán, and D. González-Mendoza, “Seed and fruit morphological diversity of ten Mexican Lagenaria siceraria landraces”, Agron. Mesoam., vol. 29, no. 1, pp. 63–74, Jan. 2018.