APA (7e ed.) Bronvermelding

Não informado. (1999). Miscellaneous Publications. U.S. Department of Commerce, National Bureau of Standards.

Chicago (17e ed.) Bronvermelding

Não informado. Miscellaneous Publications. Washington: U.S. Department of Commerce, National Bureau of Standards, 1999.

MLA (8e ed.) Bronvermelding

Não informado. Miscellaneous Publications. U.S. Department of Commerce, National Bureau of Standards, 1999.

Let op: Deze citaties zijn niet altijd 100% accuraat.