New Directions in Salad Crops: New Forms, New Tools, and Old PhilosphyEdward J. Ryder and William Waycott
The New Salad Crop RevolutionEdward J. Ryder
Leaf Lettuce: An Alternative for Virginia's Eastern ShoreS.B. Sterrett and C.P. Savage, Jr.
Plant Nutrient Composition Altered With Controlled Environments for Future Space Life-Support SystemsS. Suzanne Nielsen, Martha A. Belury, Kwangok P. Nickel, and Cary A. Mitchell
The Western Regional Plant Introduction Station: A Source of Germplasm for New Crop DevelopmentV.L. Bradley, R.C. Johnson, R.M. Hannan, D.M. Stout, and R.L. Clark
Midwest Vegetable Production Guide for Commercial Growers 2000
Lettuce and Endive production links
Magness, J.R., G.M. Markle, C.C. Compton. 1971. Food and feed crops of the United States.
Lactuca sativa var. asparagina
Lactuca sativa var. capita
Lactuca sativa var. crispa
Lactuca sativa var. longifolia
Lactuca sativa