University of Maryland, College Park. School of Library and Information Services, University of Maryland, College Park. Center of Adult Education, Wellisch, H. H., & Wilson, T. D. (1972). Subject retrieval in the seventies: New directions. Greenwood Pub. Co.
Chicago Style (17th ed.) CitationUniversity of Maryland, College Park. School of Library and Information Services, College Park. Center of Adult Education University of Maryland, Hans H. Wellisch, and Thomas D. Wilson. Subject Retrieval in the Seventies: New Directions. Westport, Conn.: Greenwood Pub. Co, 1972.
MLA (8th ed.) CitationUniversity of Maryland, College Park. School of Library and Information Services, et al. Subject Retrieval in the Seventies: New Directions. Greenwood Pub. Co, 1972.
Warning: These citations may not always be 100% accurate.