Dyfyniad APA
ebrary, Inc. (2001). An assessment of the National Institute of Standards and Technology measurement and standards laboratories: Fiscal year 2001. National Academy Press.
Dyfyniad Arddull Chicago
ebrary, Inc. An Assessment of the National Institute of Standards and Technology Measurement and Standards Laboratories: Fiscal Year 2001. Washington, D.C.: National Academy Press, 2001.
Dyfyniad MLA
ebrary, Inc. An Assessment of the National Institute of Standards and Technology Measurement and Standards Laboratories: Fiscal Year 2001. National Academy Press, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.