„Berbers mark New Year in Algeria, welcoming 2968”. Daily Sabah. 12. 1. 2018. Приступљено 25. 6. 2019. „The Berber calendar is an agrarian system, based around the seasons and agricultural work, that was inspired by the Julian calendar.”CS1 одржавање: Формат датума (веза)
Parker, R. A. (мај 1974). „Ancient Egyptian Astronomy”. Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences. 276 (1257): 51—65. JSTOR74274.CS1 одржавање: Формат датума (веза)
Lambden, Stephen (2018). Kitab al-asma' – The Book of Names. Lambden states that the "source did not, however, give precise details about where the calendral materials were located in the Kitab al-asma'."