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Cacha, Lleuvelyn A., Josephine C. Sison, and Jackson V. Yang. A Study of the Reference Interview Behavior Between Librarians and Patrons in an Academic Library Setting. Quezon City : Institute of Library Science, University of the Philippines Diliman, 2001.

Cacha, Lleuvelyn A., et al. A Study of the Reference Interview Behavior Between Librarians and Patrons in an Academic Library Setting. 2001.