Durrance, J. C., Fisher, K. E., & Hinton, M. B. (2005). How libraries and librarians help: A guide to identifying user-centered outcomes. American Library Association.
Dyfyniad Arddull ChicagoDurrance, Joan C., Karen E. Fisher, and Marian Bouch Hinton. How Libraries and Librarians Help: A Guide to Identifying User-centered Outcomes. Chicago: American Library Association, 2005.
Dyfyniad MLADurrance, Joan C., et al. How Libraries and Librarians Help: A Guide to Identifying User-centered Outcomes. American Library Association, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.