National Institute of Standards and Technology (U.S.), Andersen, R. J., & Harris, G. L. (1997). Specifications and tolerances for reference standards and field standard weights and measures. U.S. Government Printing Office.
Παραπομπή σε μορφή Chicago (17η εκδ.)National Institute of Standards and Technology (U.S.), Ross J. Andersen, και Georgia L. Harris. Specifications and Tolerances for Reference Standards and Field Standard Weights and Measures. Washington, D.C.: U.S. Government Printing Office, 1997.
Παραπομπή σε μορφή MLA (8th εκδ.)National Institute of Standards and Technology (U.S.), et al. Specifications and Tolerances for Reference Standards and Field Standard Weights and Measures. U.S. Government Printing Office, 1997.
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