David C. Tyler, Joyce C. Melvin, MaryLou Epp, Anita M. Kreps: Don't Fear the Reader: Librarian versus Interlibrary Loan Patron-Driven Acquisition of Print Books at an Academic Library by Relative Collecting Level and by Library of Congress Classes and Subclasses. Coll. Res. Libr. 75(5): 684-704 (2014)