Dyfyniad APA

Reference and User Services Association. (1997). Reference & user services quarterly. American Library Association.

Dyfyniad Arddull Chicago

Reference and User Services Association. Reference & User Services Quarterly. Chicago: American Library Association, 1997.

Dyfyniad MLA

Reference and User Services Association. Reference & User Services Quarterly. American Library Association, 1997.

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