Dyfyniad APA

Public Library Association. Public libraries. [Public Library Association].

Dyfyniad Arddull Chicago

Public Library Association. Public Libraries. [Chicago, IL, etc.]: [Public Library Association].

Dyfyniad MLA

Public Library Association. Public Libraries. [Public Library Association].

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