Rujukan Tahun

  1. "SI units". IAU. Dicapai 2010-02-18.  (See Table 5 and Section 5.15.) Reprinted from: Wilkins, George A. (1989). "The IAU Style Manual" (PDF). IAU Transactions. IAU Commission 5. XXB
  2. OED, s.v. "year", entry 2.b.: "transf. Applied to a very long period or cycle (in chronology or mythology, or vaguely in poetic use)."
  3. Shields, Miriam Nancy. (1924). "The New Calendar of the Eastern Churches, Popular Astronomy, Vol. 32, p.407. Courtesy NASA Astrophysics Data System.
  4. Ziggelaar, A. (1983). "The Papal Bull of 1582 Promulgating a Reform of the Calendar". In Coyne, Hoskin, Pedersen (eds), Gregorian Reform of the Calendar: Proceedings of the Vatican Conference to Commemorate its 400th Anniversary. Vatican City: Pontifical Academy of Sciences, Specolo Vaticano, p. 223
  5. Richards, E.G. (2013). "Calendars". dalam Urban, S.E.; Seidelmann, P. K. Explanatory Supplement to the Astronomical Almanac (PDF) (edisi 3rd). Mill Valley, CA: University Science Books. m/s. 585, 590. ISBN 978-1-891389-85-6.  Richards does not explicitly state Anno Domini is the worldwide standard, but does state on page 585 the Gregorian calendar is used throughout the world for secular purposes; the Gregorian calendar is used with the Anno Domini era.
Ukuran dan piawaian waktu
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Piawaian antarabangsa
Piawaian lampau
Masa dalam fizik
Kaji purba dan kaji bumi
Kronologi astronomi
Unit masa
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