APA aipamena

Hoffer, J. R. (1961). Information retrieval in social welfare: Experiences with an edge-notched information retrieval system. National Conference on Social Welfare.

Chicago Style aipamena

Hoffer, Joe Ralph. Information Retrieval in Social Welfare: Experiences with an Edge-notched Information Retrieval System. Columbus, Ohio: National Conference on Social Welfare, 1961.

MLA aipamena

Hoffer, Joe Ralph. Information Retrieval in Social Welfare: Experiences with an Edge-notched Information Retrieval System. National Conference on Social Welfare, 1961.