APA (7e ed.) Bronvermelding

Não informado. (1903). Circular of the Bureau of Standards. U.S. Department of Commerce, National Bureau of Standards.

Chicago (17e ed.) Bronvermelding

Não informado. Circular of the Bureau of Standards. Washington: U.S. Department of Commerce, National Bureau of Standards, 1903.

MLA (8e ed.) Bronvermelding

Não informado. Circular of the Bureau of Standards. U.S. Department of Commerce, National Bureau of Standards, 1903.

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