Dyfyniad APA

Pennsylvania libraries: Research and practice. Pittsburgh, PA: University Library System, University of Pittsburgh.

Dyfyniad Arddull Chicago

Pennsylvania Libraries: Research and Practice. Pittsburgh, PA: University Library System, University of Pittsburgh.

Dyfyniad MLA

Pennsylvania Libraries: Research and Practice. Pittsburgh, PA: University Library System, University of Pittsburgh.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.