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Diocletian abdicated in 305AD and therefore could not have created this province in 312. - N. Pilger

For notes on recent changes, see Talk:Britannia Prima. —  LlywelynII 07:44, 11 March 2015 (UTC) reply

Either use the text or don't bother mentioning it. Below are two that should not be reincluded until we're using them to source some statement in the article:

• Mattingly, David (2006). An Imperial Possession: Britain in the Roman Province. London: Penguin.
• Creighton, John (2006). Britannia: the Creation of a Roman Province. London: Routledge.

 —  LlywelynII 07:44, 11 March 2015 (UTC) reply