Highfill, W. C. (1969). The relationship of indexing depth to subject catalog retrieval effectiveness.
Chicago Style (17th ed.) CitationHighfill, William Carl. The Relationship of Indexing Depth to Subject Catalog Retrieval Effectiveness. ???, 1969.
MLA (8th ed.) CitationHighfill, William Carl. The Relationship of Indexing Depth to Subject Catalog Retrieval Effectiveness. 1969.
Warning: These citations may not always be 100% accurate.