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H. P. Lehmann, X. Fuentes-Arderiu, and L. F. Bertello (1996): "Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)"; p. 963, item "Avogadro constant". Pure and Applied Chemistry, vol. 68, iss. 4, pp. 957–1000. doi:10.1351/pac199668040957
Bragg, William Henry; Bragg, William Lawrence (1997). "The reflection of X-rays by crystals". Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character. 88 (605): 428–438. doi:10.1098/rspa.1913.0040.
H. P. Lehmann, X. Fuentes-Arderiu, and L. F. Bertello (1996): "Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)"; p. 963, item "Avogadro constant". Pure and Applied Chemistry, vol. 68, iss. 4, pp. 957–1000. doi:10.1351/pac199668040957
Avogadro, Amedeo (1811). "Essai d'une maniere de determiner les masses relatives des molecules elementaires des corps, et les proportions selon lesquelles elles entrent dans ces combinaisons". Journal de Physique. 73: 58–76. English translation.
Loschmidt, J. (1865). "Zur Grösse der Luftmoleküle" [On the size of air molecules]. Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. Wien (in German). 52 (2): 395–413. English translation.