↑ Theo Từ điển Webster 1800 Century Universal Dictionary..
↑ Winkelmann, F biên tập (1975). Vita Constantini (bằng tiếng Greek). Berlin, DE: Akademie-Verlag. Bảo trì CS1: Ngôn ngữ không rõ (link)
↑ Ninety Bishops of Egypt and Libya, including Athanasius (1892). Schaff, Philip; Knight, Kevin, biên tập. Ad Afros Epistola Synodica. Nicene and Post-Nicene Fathers, Second Series, Vol. 4. Archibald Robertson (transl.) (Buffalo, NY: Christian Literature Publishing Co).
↑ M'Clintock and Strong's Cyclopedia, Volume 7, page 45a
↑ Loyn, H. R. (1989). The Middle Ages: A Concise Encyclopædia. London: Thames and Hudson, Ltd. tr. 240. ISBN0-500-27645-5.
↑ "On the fourteenth day of [the month], being accurately observed after the equinox, the ancients celebrated the Passover, according to the divine command. Whereas the men of the present day now celebrate it before the equinox, and that altogether through negligence and error", Peter, Bishop of Alexandria, quoted in the Chronicon Paschale
↑ "Those who place [the first lunar month of the year] in [the twelfth zodiacal sign before the spring equinox] and fix the Paschal fourteenth day accordingly, make a great and indeed an extraordinary mistake", Anatolius of Laodicea, quoted in Eusebius, Church History 7.32.
