Armstrong, L. D. (1975). A guide to international recommendations on names and symbols for quantities and on units of measurement / Lowe D. Armstrong. World Health Organization.
Lua i Stíl Chicago (17ú heag.)Armstrong, Lowe D. A Guide to International Recommendations on Names and Symbols for Quantities and on Units of Measurement / Lowe D. Armstrong. Geneva: World Health Organization, 1975.
Lua MLA (9ú heag.)Armstrong, Lowe D. A Guide to International Recommendations on Names and Symbols for Quantities and on Units of Measurement / Lowe D. Armstrong. World Health Organization, 1975.
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