Decker, Deena S.; Wilson, Hugh D. (1987). "Allozyme Variation in the Cucurbita pepo Complex: C. pepo var. ovifera vs. C. texana". Systematic Botany. 12 (2). American Society of Plant Taxonomists: 263–273. doi:10.2307/2419320. JSTOR2419320.
jstor.org
Decker, Deena S.; Wilson, Hugh D. (1987). "Allozyme Variation in the Cucurbita pepo Complex: C. pepo var. ovifera vs. C. texana". Systematic Botany. 12 (2). American Society of Plant Taxonomists: 263–273. doi:10.2307/2419320. JSTOR2419320.
missouribotanicalgarden.org
"Cucurbita pepo". Missouri Botanical Garden. Retrieved September 2, 2013.