International Union of Geodesy and Geophysics (English Wikipedia)

Lyons, Henry G. (1919). "The Brussels Meeting of the International Research Council". Nature. 103 (2598): 464–466. Bibcode:1919Natur.103..464H. doi:10.1038/103464b0.
Good, Gregory A. (2000). "The Assembly of Geophysics: Scientific Disciplines as Frameworks of Consensus". Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics. 31 (3): 259–292. Bibcode:2000SHPMP..31..259G. doi:10.1016/S1355-2198(00)00018-6.
Ismail-Zadeh, Alik (2016). "Geoscience international: the role of scientific unions". History of Geo- and Space Sciences. 7 (2): 103–123. Bibcode:2016HGSS....7..103I. doi:10.5194/hgss-7-103-2016.

archive.org (Global: 6^th place; English: 6^th place)

Burchfiel, B. C. (1987) International Role of U.S. Geoscience US National Academies page 32

Lyons, Henry G. (1919). "The Brussels Meeting of the International Research Council". Nature. 103 (2598): 464–466. Bibcode:1919Natur.103..464H. doi:10.1038/103464b0.
Good, Gregory A. (2000). "The Assembly of Geophysics: Scientific Disciplines as Frameworks of Consensus". Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics. 31 (3): 259–292. Bibcode:2000SHPMP..31..259G. doi:10.1016/S1355-2198(00)00018-6.
Ismail-Zadeh, Alik (2016). "Geoscience international: the role of scientific unions". History of Geo- and Space Sciences. 7 (2): 103–123. Bibcode:2016HGSS....7..103I. doi:10.5194/hgss-7-103-2016.
Ismail-Zadeh, Alik; Joselyn, JoAnn (Eds.) (2019). "The International Union of Geodesy and Geophysics: from different spheres to a common globe". History of Geo- and Space Sciences. 10: 17–191. doi:10.5194/hgss-10-17-2019.

"Associations of the IUGG". International Union of Geodesy and Geophysics. Retrieved 2 May 2014.
"Union Commissions". International Union of Geodesy and Geophysics. Retrieved 2 May 2014.
IUGG - Bureau of the Union Archived 2020-01-24 at the Wayback Machine. Retrieved 01/07/2015.