Harris, F. E. (1963). Numbers and units for science. Under the auspices of Behavioral Research Laboratories, Palo Alto, California. Behavioral Research Laboratories.
Chicago-referens (17:e uppl.)Harris, Frank E. Numbers and Units for Science. Under the Auspices of Behavioral Research Laboratories, Palo Alto, California. California: Behavioral Research Laboratories, 1963.
MLA-referens (9:e uppl.)Harris, Frank E. Numbers and Units for Science. Under the Auspices of Behavioral Research Laboratories, Palo Alto, California. Behavioral Research Laboratories, 1963.
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