APA (7e ed.) Bronvermelding

Não informado. (1950). Library Science Abstracts. Library Association.

Chicago (17e ed.) Bronvermelding

Não informado. Library Science Abstracts. London: Library Association, 1950.

MLA (8e ed.) Bronvermelding

Não informado. Library Science Abstracts. Library Association, 1950.

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