Cooper, J. K. (1986). „Electrocardiography 100 years ago. Origins, pioneers, and contributors”. New England Journal of Medicine. 315 (7): 461—4. PMID3526152. doi:10.1056/NEJM198608143150721.
Moyer, V. A. (2. 10. 2012). „Screening for coronary heart disease with electrocardiography: U.S. Preventive Services Task Force recommendation statement.”. Annals of Internal Medicine. 157 (7): 512—8. PMID22847227. doi:10.7326/0003-4819-157-7-201210020-00514.
Cooper, J. K. (1986). „Electrocardiography 100 years ago. Origins, pioneers, and contributors”. New England Journal of Medicine. 315 (7): 461—4. PMID3526152. doi:10.1056/NEJM198608143150721.
Moyer, V. A. (2. 10. 2012). „Screening for coronary heart disease with electrocardiography: U.S. Preventive Services Task Force recommendation statement.”. Annals of Internal Medicine. 157 (7): 512—8. PMID22847227. doi:10.7326/0003-4819-157-7-201210020-00514.
oxforddnb.com
Ronald M. Birse,rev. Patricia E. Knowlden Oxford Dictionary of National Biography 2004 (Subscription required) – (original source is his biography written by his wife – Elizabeth Muirhead. Alexandernn Muirhead 1848–1920. Oxford, Blackwell: privately printed 1926)
web.archive.org
Kumar, Aswini. „ECG - simplified”. LifeHugger. Архивирано из оригинала 2. 10. 2017. г. Приступљено 11. 2. 2010.