1. Andres, T.1987.Cucurbita fraterna, the closest wild relative and progenitor ofC. pepo. Cucurbit Genetics Cooperative Report10:69–71.
2. —. 1990. Biosystematics, theories on the origin, and breeding potential ofCucurbita ficifolia. Pages 102–119in D. M. Bates, R. W. Robinson, and C. Jeffrey, eds., Biology and utilization of the Cucurbitaceae. Cornell University Press, Ithaca, NY.
3. —, and G. P. Nabhan. 1988. Taxonomic rank and rarity ofCucurbita okeechobeensis. Cucurbit Genetics Cooperative Report11:83–85.
4. Bailey, L. H. 1929. The domesticated Cucurbitas. I. Gentes Herb. 2:62–115.
5. —. 1943. Species ofCucurbita. Gentes Herb.6:267–322.