APA استشهاد

Webb, W. H. (1987). Sources of information in the social sciences: A guide to the literature (Ed.3.).

استشهاد بنمط شيكاغو

Webb, William H. Sources of Information in the Social Sciences: A Guide to the Literature. Ed.3. Chicago, American library association, 1987.

MLA استشهاد

Webb, William H. Sources of Information in the Social Sciences: A Guide to the Literature. Ed.3. 1987.