APA

Webb W. H., . (1986). Sources of information in the social sciences. New Delhi: Arnold-Heinemann.

Chicago

Webb William H, . 1986. Sources of information in the social sciences. New Delhi: Arnold-Heinemann.

Harvard

Webb W. H., . (1986). Sources of information in the social sciences. New Delhi: Arnold-Heinemann.

MLA

Webb William H, . Sources of information in the social sciences. New Delhi: Arnold-Heinemann. 1986.