Phadke, VK; Bednarczyk, RA; Salmon, DA; Omer, SB. (March 2016). «Association Between Vaccine Refusal and Vaccine Preventable Diseases in the United States: A Review of Measles and Pertussis» JAMA 315 (11): 1149–58. doi:10.1001/jama.2016.1353. OCLC.5007135PMID26978210..
Phadke, VK; Bednarczyk, RA; Salmon, DA; Omer, SB. (March 2016). «Association Between Vaccine Refusal and Vaccine Preventable Diseases in the United States: A Review of Measles and Pertussis» JAMA 315 (11): 1149–58. doi:10.1001/jama.2016.1353. OCLC.5007135PMID26978210..
Phadke, VK; Bednarczyk, RA; Salmon, DA; Omer, SB. (March 2016). «Association Between Vaccine Refusal and Vaccine Preventable Diseases in the United States: A Review of Measles and Pertussis» JAMA 315 (11): 1149–58. doi:10.1001/jama.2016.1353. OCLC.5007135PMID26978210..