Powell, R. R. (2004). Basic research methods for librarians. Westport, Conn: Libraries Unlimited.
Dyfyniad Arddull ChicagoPowell, Ronald R. Basic Research Methods for Librarians. Westport, Conn: Libraries Unlimited, 2004.
Dyfyniad MLAPowell, Ronald R. Basic Research Methods for Librarians. Westport, Conn: Libraries Unlimited, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.