"Holy See (Vatican City)", The World Factbook, Central Intelligence Agency, 28 December 2022, archived from the original on 26 January 2022, retrieved 4 January 2023
"Holy See (Vatican City)", The World Factbook, Central Intelligence Agency, 28 December 2022, archived from the original on 26 January 2022, retrieved 4 January 2023
The De Agostini Atlas Calendar listed the area of Vatican City as 44 ha in its 1930 edition[11] but corrected it to 49 ha in its 1945–1946 edition.[12] The figure of 44 ha is still widely cited by many sources despite its inaccuracy.