„Lettuce”. Agricultural Marketing Resource Center, Iowa State University. mai 2015. Arhivat din original la . Accesat în .
„Lettuce”. Agricultural Marketing Resource Center, Iowa State University. mai 2015. Arhivat din original la . Accesat în .
ars-grin.gov
Porcher, Michael H. (). „Sorting Lactuca Names”. Multilingual Multiscript Plant Name Database. University of Melbourne. Arhivat din original la . Accesat în .
Koopman, Wim J.M.; Guetta, Eli; van de Wiel, Clemens C.M.; Vosman, Ben; van den Berg, Ronald G (). „Phylogenetic relationships among Lactuca (Asteraceae) species and related genera based on ITS-1 DNA sequences”. American Journal of Botany. 85 (11): 1517–1530. doi:10.2307/2446479. JSTOR2446479. PMID21680311.
Edwards, C. A. (mai 1964). „The bionomics of swift moths. I.—The ghost swift moth, Hepialus humuli (L.)”. Bulletin of Entomological Research. 55 (1): 147–160. doi:10.1017/S000748530004935X. ISSN1475-2670.
Urban, L.; Chabane Sari, D.; Orsal, B.; Lopes, M.; Miranda, R.; Aarrouf, J. (). „UV-C light and pulsed light as alternatives to chemical and biological elicitors for stimulating plant natural defenses against fungal diseases”. Scientia Horticulturae. Elsevier. 235: 452–459. doi:10.1016/j.scienta.2018.02.057. ISSN0304-4238.
Hanning, I.B.; Johnson, M.G.; Ricke, S.C (decembrie 2008). „Precut prepackaged lettuce: a risk for listeriosis?”. Foodborne Pathogens and Disease. 5 (6): 731–746. doi:10.1089/fpd.2008.0142. PMID18847382.
Gajraj, Roger; Pooransingh, Shalini; Hawker, Jeremy; Olowokure, Babatunde (aprilie 2012). „Multiple outbreaks of Salmonella braenderup associated with consumption of iceberg lettuce”. International Journal of Environmental Health Research. 22 (2): 150–155. doi:10.1080/09603123.2011.613114. PMID21916661.
Koopman, Wim J.M.; Guetta, Eli; van de Wiel, Clemens C.M.; Vosman, Ben; van den Berg, Ronald G (). „Phylogenetic relationships among Lactuca (Asteraceae) species and related genera based on ITS-1 DNA sequences”. American Journal of Botany. 85 (11): 1517–1530. doi:10.2307/2446479. JSTOR2446479. PMID21680311.
Koopman, Wim J.M.; Guetta, Eli; van de Wiel, Clemens C.M.; Vosman, Ben; van den Berg, Ronald G (). „Phylogenetic relationships among Lactuca (Asteraceae) species and related genera based on ITS-1 DNA sequences”. American Journal of Botany. 85 (11): 1517–1530. doi:10.2307/2446479. JSTOR2446479. PMID21680311.
Hanning, I.B.; Johnson, M.G.; Ricke, S.C (decembrie 2008). „Precut prepackaged lettuce: a risk for listeriosis?”. Foodborne Pathogens and Disease. 5 (6): 731–746. doi:10.1089/fpd.2008.0142. PMID18847382.
Gajraj, Roger; Pooransingh, Shalini; Hawker, Jeremy; Olowokure, Babatunde (aprilie 2012). „Multiple outbreaks of Salmonella braenderup associated with consumption of iceberg lettuce”. International Journal of Environmental Health Research. 22 (2): 150–155. doi:10.1080/09603123.2011.613114. PMID21916661.
Smith, Richard; Cahn, Michael; Daugovish, Oleg; Koike, Steven; Natwick, Eric; Smith, Hugh; Subbarao, Krishna; Takele, Etaferahu; Turin, Thomas. „Leaf Lettuce Production in California”(PDF). University of California Vegetable Research and Information Center. Arhivat din original(PDF) la . Accesat în .
ucdavis.edu
aic.ucdavis.edu
Boriss, Hayley; Brunke, Henrich (octombrie 2005). „Commodity Profile: Lettuce”(PDF). University of California. p. 296. Arhivat din original(PDF) la . Accesat în .
Boriss, Hayley; Brunke, Henrich (octombrie 2005). „Commodity Profile: Lettuce”(PDF). University of California. p. 296. Arhivat din original(PDF) la . Accesat în .
Porcher, Michael H. (). „Sorting Lactuca Names”. Multilingual Multiscript Plant Name Database. University of Melbourne. Arhivat din original la . Accesat în .
Smith, Richard; Cahn, Michael; Daugovish, Oleg; Koike, Steven; Natwick, Eric; Smith, Hugh; Subbarao, Krishna; Takele, Etaferahu; Turin, Thomas. „Leaf Lettuce Production in California”(PDF). University of California Vegetable Research and Information Center. Arhivat din original(PDF) la . Accesat în .
Boriss, Hayley; Brunke, Henrich (octombrie 2005). „Commodity Profile: Lettuce”(PDF). University of California. p. 296. Arhivat din original(PDF) la . Accesat în .
Boriss, Hayley; Brunke, Henrich (octombrie 2005). „Commodity Profile: Lettuce”(PDF). University of California. p. 296. Arhivat din original(PDF) la . Accesat în .
Edwards, C. A. (mai 1964). „The bionomics of swift moths. I.—The ghost swift moth, Hepialus humuli (L.)”. Bulletin of Entomological Research. 55 (1): 147–160. doi:10.1017/S000748530004935X. ISSN1475-2670.
Urban, L.; Chabane Sari, D.; Orsal, B.; Lopes, M.; Miranda, R.; Aarrouf, J. (). „UV-C light and pulsed light as alternatives to chemical and biological elicitors for stimulating plant natural defenses against fungal diseases”. Scientia Horticulturae. Elsevier. 235: 452–459. doi:10.1016/j.scienta.2018.02.057. ISSN0304-4238.
wsu.edu
vegetables.wsu.edu
Miles, Carol. „Winter Lettuce”. Washington State University. Arhivat din original la . Accesat în .