APA (7e ed.) Bronvermelding

Não informado. Scientific information activities of federal agencies. U.S. National Science Foundation.

Chicago (17e ed.) Bronvermelding

Não informado. Scientific Information Activities of Federal Agencies. Washington: U.S. National Science Foundation.

MLA (8e ed.) Bronvermelding

Não informado. Scientific Information Activities of Federal Agencies. U.S. National Science Foundation.

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