(1961). Persistent issues in American librarianship: Papers presented before the Twenty-fifth annual conference of the Graduate Library School of the University of Chicago August 15-17, 1960. University of Chicago, Graduate Library School.
Citazione stile Chigago Style (17a edizione)Persistent Issues in American Librarianship: Papers Presented Before the Twenty-fifth Annual Conference of the Graduate Library School of the University of Chicago August 15-17, 1960. [Chicago]: University of Chicago, Graduate Library School, 1961.
Citatione MLA (9a ed.)Persistent Issues in American Librarianship: Papers Presented Before the Twenty-fifth Annual Conference of the Graduate Library School of the University of Chicago August 15-17, 1960. University of Chicago, Graduate Library School, 1961.