Papaya—Julia Morton, Fruits of Warm Climates
Tropical Fruits—Mary Lamberts and Jonathan H. Crane
South American Fruits Deserving Further Attention—Richard J. Campbell
Papaya: A Potential Annual Crop Under Middle Georgia Conditions—U.L. Yadava, Janice A. Burris, and D. McCrary
Food and feed crops of the United States. Magness, J.R., G.M. Markle, C.C. Compton. 1971.
Handbook of Energy Crops—James A. Duke. 1983. unpublished.
Link to NewCROP info on Babaco, Carica pentagona
Highland Papayas can be found in Lost Crops of the Incas from National Academy Press
Carica pubescens
Carica stipulata
Carica monoica
Carica goudotiana
California Rare Fruit Growers "Papaya Fruit Facts"
Commodity Sheet FVSU-002 Papaya from Fort Valley State University
Papaya—from Mark Reiger, Dept of Horticulture, University of Georgia.
Papaya Information from the University of California Fruit & Nut Research and Information Center