参考図書
Higgens, Gavin, ed (1984). Printed Reference Material. Handbooks on Library Practice (2nd revised ed.). London: Library Association. ISBN 978-0853659952
Katz, William A. (2001). Introduction to Reference Work, Volume 1: Basic Information Services (8th ed.). New York: McGraw-Hill. ISBN 978-0072441079
Katz, William A. (2001). Introduction to Reference Work, Volume 2: Reference Services and Reference Processes (8th ed.). New York: McGraw-Hill. ISBN 978-0072441437. https://archive.org/details/introductiontore00will_0
Lynch, Jack (2016). You Could Look It Up: The Reference Shelf From Ancient Babylon to Wikipedia. New York: Bloomsbury Press. ISBN 978-0802777522