Price,Gary(2010).“Failures of the global measurement system. Part 1: the case of chemistry”.Accreditation and Quality Assurance15(7): 421–427.doi:10.1007/s00769-010-0655-z..
molar volume of ideal gas (273.15 K, 101.325 kPa) The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. 2019-05-20. 2018 CODATA recommended values
molar mass of carbon-12 The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. 2019-05-20. 2018 CODATA recommended values