Phylogenetic Relationships Among Domesticated and Wild Species of Cucurbita (Cucurbitaceae) Inferred From a Mitochondrial Gene: Implications for Crop Plant Evolution and Areas of Originv. 99No. 1National Academy of Sciences (U.S.)535–540
Sanjur, Oris I., Piperno, Dolores R., Andres, Thomas C., and Wessel-Beaver, Linda. 2002. "Phylogenetic Relationships Among Domesticated and Wild Species of Cucurbita (Cucurbitaceae) Inferred From a Mitochondrial Gene: Implications for Crop Plant Evolution and Areas of Origin." Proceedings of the National Academy of Sciences of the United States of America, 99, (1) 535–540.