U.S. Government Publishing Office Style Manual U.S. Government Publishing Office, 2016, Abbreviations and Letter Symbols 9.56, pp. 236–237, 250. kL (kiloliter), mL (milliliter) などについても同様である。
Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, NIST, p. 51, 下欄注19 Between 1901 and 1964 the liter was slightly larger (1.000028 dm3); when one uses high-accuracy volume data of that time, this fact must be kept in mind.
Guide for the Use of the International System of Units (SI)(PDF) , NIST Special Publication 811, 2008 Edition, NIST, p. 8 Table 6. Non-SI units accepted for use with the SI by the CIPM and this Guide, ('b') "Thus, although both l and L are internationally accepted symbols for the liter, to avoid this risk the symbol to be used in the United States is L."
The International System of Units (SI)(PDF) , NIST Special Publication 330, 2008 Edition, p. 32, 注 (f) Editors' note: Since the preferred unit symbol for the liter in the United States is L, only L is given in the table;
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