APA (7e ed.) Bronvermelding

Não informado. (1968). Government Reports Index. U.S. Department of Commerce, National Technical Information Service.

Chicago (17e ed.) Bronvermelding

Não informado. Government Reports Index. Washington: U.S. Department of Commerce, National Technical Information Service, 1968.

MLA (8e ed.) Bronvermelding

Não informado. Government Reports Index. U.S. Department of Commerce, National Technical Information Service, 1968.

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