Spathaky, Mike Old Style and New Style Dates and the change to the Gregorian Calendar. "Before 1752, parish registers, in addition to a new year heading after 24th March showing, for example '1733', had another heading at the end of the following December indicating '1733/4'. This showed where the Historical Year 1734 started even though the Civil Year 1733 continued until 24th March. ... We as historians have no excuse for creating ambiguity and must keep to the notation described above in one of its forms. It is no good writing simply 20th January 1745, for a reader is left wondering whether we have used the Civil or the Historical Year. The date should either be written 20th January 1745 OS (if indeed it was Old Style) or as 20th January 1745/6. The hyphen (1745-6) is best avoided as it can be interpreted as indicating a period of time."
Baker, John. «Why Bacon, Oxford and Other's Weren't Shakespeare». Archivado desde el original el 4 de abril de 2005.) uses the quote by Benjamin Woolley and cites The Queen's Conjurer, The Science and Magic of Dr. John Dee, Adviser to Queen Elizabeth I, page 173.
monticello.org
«Old Style (O.S.)». monticello.org. June 1995. Consultado el 6 de mayo de 2017.
nataliavogeikoff.com
Blegen, Carl W. (25 de diciembre de 2013). «An Odd Christmas». Consultado el 1 de abril de 2018.
Engber, Daniel (18 de enero de 2006). «What's Benjamin Franklin's Birthday?». Slate. Consultado el 8 de febrero de 2013. (Both Franklin's and Washington's confusing birth dates are clearly explained.)
Baker, John. «Why Bacon, Oxford and Other's Weren't Shakespeare». Archivado desde el original el 4 de abril de 2005.) uses the quote by Benjamin Woolley and cites The Queen's Conjurer, The Science and Magic of Dr. John Dee, Adviser to Queen Elizabeth I, page 173.