Rules for a dictionary catalog, by Charles A. Cutter, fourth edition, rewritten
Cutter, Charles A. (Charles Ammi), 1837-1903. Rules for a dictionary catalog, by Charles A. Cutter, fourth edition, rewritten. Washington. UNT Digital Library. digital.library.unt.edu/ark:/67531/metadc1048/. Accessed February 9, 2010.