BUCHANAN, Brenda J. Oxford Dictionary of National Biography [online]. Oxford University Press, 2004 [cit. 2014-05-15]. Heslo McAdam, John Loudon (1756–1836). Dostupné online. DOI10.1093/ref:odnb/17325.
electricscotland.com
Significant Scots. John Loudon MacAdam [online]. Electric Scotland [cit. 2017-06-22]. Dostupné online. (angličtina)
oxforddnb.com
BUCHANAN, Brenda J. Oxford Dictionary of National Biography [online]. Oxford University Press, 2004 [cit. 2014-05-15]. Heslo McAdam, John Loudon (1756–1836). Dostupné online. DOI10.1093/ref:odnb/17325.