APA

Harman D. K, . (1996). The Fourth Text REtrieval Conference (TREC-4). Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology.

Chicago

Harman D. K, . 1996. The Fourth Text REtrieval Conference (TREC-4). Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology.

Harvard

Harman D. K, . (1996). The Fourth Text REtrieval Conference (TREC-4). Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology.

MLA

Harman D. K, . The Fourth Text REtrieval Conference (TREC-4). Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology. 1996.