Schünemann H, Hill S, Guyatt G (2011). «The GRADE approach and Bradford Hill's criteria for causation». Journal of Epidemiology & Community Health65 (5): 392-95. PMID20947872. doi:10.1136/jech.2010.119933.
de Vries J, Antoine JM, Burzykowski T, Chiodini A, Gibney M, Kuhnle G, Méheust A, Pijls L, Rowland I (2013). «Markers for nutrition studies: review of criteria for the evaluation of markers». Eur J Nutr52 (7): 1685-99. PMID23955424. doi:10.1007/s00394-013-0553-3.
Cresswelfirst1=James E; Desneux, Nicolas; VanEngelsdorp, Dennis (24 de enero de 2012). «Dietary traces of neonicotinoid pesticides as a cause of population declines in honey bees: an evaluation by Hill's epidemiological criteria». Pest Management Science68 (6): 819-827. PMID22488890. doi:10.1002/ps.3290.
Schünemann H, Hill S, Guyatt G (2011). «The GRADE approach and Bradford Hill's criteria for causation». Journal of Epidemiology & Community Health65 (5): 392-95. PMID20947872. doi:10.1136/jech.2010.119933.
de Vries J, Antoine JM, Burzykowski T, Chiodini A, Gibney M, Kuhnle G, Méheust A, Pijls L, Rowland I (2013). «Markers for nutrition studies: review of criteria for the evaluation of markers». Eur J Nutr52 (7): 1685-99. PMID23955424. doi:10.1007/s00394-013-0553-3.
Cresswelfirst1=James E; Desneux, Nicolas; VanEngelsdorp, Dennis (24 de enero de 2012). «Dietary traces of neonicotinoid pesticides as a cause of population declines in honey bees: an evaluation by Hill's epidemiological criteria». Pest Management Science68 (6): 819-827. PMID22488890. doi:10.1002/ps.3290.