Thompson Cooper et Adam I. P. Smith, « Francis Peter Plowden (1749–1829) », dans Oxford Dictionary of National Biography, màj 2009 (lire en ligne).
legislation.gov.uk
The Public Order (Northern Ireland) Order 1987, No. 463 (N.I. 7), PART II Article 3, [lire en ligne].
nytimes.com
James F. Clarity, “3 Catholic Brothers Killed in Fire, Stunning Ulster and Raising Fears”, The New York Times, 13.07.1998, [lire en ligne]
official-documents.gov.uk
The Rosemary Nelson Inquiry Report, p. 72 “By the mid-1990s the population of Portadown was around 30,000, approximately 30% Catholic and 70% Protestant”, PDF [1].
