APA (7e ed.) Bronvermelding

(1963). Directory of special libraries and information centers. Gale Research.

Chicago (17e ed.) Bronvermelding

Directory of Special Libraries and Information Centers. Detroit: Gale Research, 1963.

MLA (9e ed.) Bronvermelding

Directory of Special Libraries and Information Centers. Gale Research, 1963.

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