(1990). 12 years till 2000: Preparing for reference in the 21st century / David F. Kohl, editor ; prepared by Reference and Adult Services Conference Program Committee, ALA Annual Conference, New Orleans, 1988, Reference and Adult Services Division, American Library Association.
Chicago-čujuhus (17. p.)12 Years Till 2000: Preparing for Reference in the 21st Century / David F. Kohl, Editor ; Prepared by Reference and Adult Services Conference Program Committee, ALA Annual Conference, New Orleans, 1988, Reference and Adult Services Division, American Library Association. 1990.
MLA-čujuhus (9. p.)12 Years Till 2000: Preparing for Reference in the 21st Century / David F. Kohl, Editor ; Prepared by Reference and Adult Services Conference Program Committee, ALA Annual Conference, New Orleans, 1988, Reference and Adult Services Division, American Library Association. 1990.