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."
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". Diarsipkan dari versi asli tanggal 4 April 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. Diakses tanggal 6 May 2017.
narod.ru
grigam.narod.ru
S. I. Seleschnikow: Wieviel Monde hat ein Jahr? (Aulis-Verlag, Leipzig/Jena/Berlin 1981, p. 149), which is a German translation of С. И. Селешников: История календаря и хронология (Издательство "Наука", Moscow 1977). The relevant chapter is available online here: История календаря в России и в СССР (Calendar history in Russia and the USSR). (dalam bahasa Rusia)
nataliavogeikoff.com
Blegen, Carl W. (25 December 2013) [n.d.]. Vogeikoff-Brogan, Natalia, ed. "An Odd Christmas". From the Archivist's Notebook. Diakses tanggal 1 April 2018.
Engber, Daniel (18 January 2006). "What's Benjamin Franklin's Birthday?". Slate. Diakses tanggal 8 February 2013. (Both Franklin's and Washington's confusing birth dates are clearly explained.)
Baker, John. "Why Bacon, Oxford and Other's Weren't Shakespeare". Diarsipkan dari versi asli tanggal 4 April 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.
