^Clark, William W.; Mark, Robert (March 1, 1984). "The First Flying Buttresses: A New Reconstruction of the Nave of Notre-Dame de Paris". The Art Bulletin. 66 (1): 47–65. doi:10.1080/00043079.1984.10788136. ISSN0004-3079. The traditional starting date is associated with the visit of Pope Alexander III to Paris between March 24 and April 25, 1163, during which time he dedicated the "new" chevet at St.-Germain-des-Pres and is said to have laid the cornerstone of Notre-Dame.
^Bruzelius, Caroline (December 1, 1987). "The Construction of Notre-Dame in Paris". The Art Bulletin. 69 (4): 540–569. doi:10.1080/00043079.1987.10788458. ISSN0004-3079. The tradition that the cornerstone was laid in 1163 may well be either apocryphal or largely symbolic [...] I shall not take issue with the traditional date of the inception of the work in ca. 1163, nor with the date of its completion in ca. 1250, for both of which there is much good evidence.
^Malone, Patricia (2008). ""Se Principem Nominat:" Rhetorical Self-Fashioning and Epistolary Style in the Letters of Owain Gwynedd". Proceedings of the Harvard Celtic Colloquium. 28: 169–184. ISSN1545-0155. JSTOR41219622. We know from Thomas Becket's letter to Pope Alexander that Owain had begun to refer to himself as princeps by at least 1163.
^Hartshorne, Richard (December 1, 1933). "Geographic and Political Boundaries in Upper Silesia". Annals of the Association of American Geographers. 23 (4): 195–228. doi:10.1080/00045603309357073. ISSN0004-5608. The separation of Silesia from Poland dates, for practical purposes perhaps from 1163
^HARRINGTON, JOSEPH F. (1974). "Upper Silesia and the Paris Peace Conference". The Polish Review. 19 (2): 25–45. ISSN0032-2970. JSTOR25777197. Upper Silesia had not been Polish since 1163
^Vandvik, Eirik (June 29, 2010). "Donatio Constantini and early Norwegian church policy". Symbolae Osloenses: Norwegian Journal of Greek and Latin Studies. 31 (1): 131–137. doi:10.1080/00397675508590469.
^Brownlee, John (1975). "Crisis as Reinforcement of the Imperial Institution. The Case of the Jōkyū Incident, 1221". Monumenta Nipponica. 30 (2): 193–201. doi:10.2307/2383842. ISSN0027-0741. JSTOR2383842.
^Ibn al-Sha'ar al-Mawsili (2005). عقود الجمان في شعراء هذا الزمان (in Arabic). Vol. V, Part VI (First ed.). Damascus, Syria: DKI (Dar al-Kotob al-Ilmiyah ). pp. 308–311.
^Share, Robert H. (2007). "How to Think with Chan Gong'an". In Furth, Charlotte; Zeitlin, Judith T.; Hsiung, Ping-chen (eds.). Thinking With Cases: Specialist Knowledge in Chinese Cultural History. Honolulu, HI: University of Hawaii Press. p. 231. ISBN9780824830496.
^Burgtorf, Jochen (2015). "Antioch, Principality of". In Murray, Alan V. (ed.). The Crusades to the Holy Land: The Essential Reference Guide: The Essential Reference Guide. Santa Barbara, CA, Denver, CO: ABC-CLIO. p. 10. ISBN9781610697804.