The International System of Units - 9th edition (2019) Ver.4.01, June 2026 Published in May 2019 - Revised in June 2026, BIPM, pp.140-141, Table 8. Non-SI units
The International System of Units - 9th edition (2019) Ver.4.01, June 2026 Published in May 2019 - Revised in June 2026, BIPM, pp.140-141, Table 8. Non-SI units