Dyfyniad APA

Riechel, R. (1989). Personnel needs and changing reference service. Library Professional Publications.

Dyfyniad Arddull Chicago

Riechel, Rosemarie. Personnel Needs and Changing Reference Service. Hamden, Conn.: Library Professional Publications, 1989.

Dyfyniad MLA

Riechel, Rosemarie. Personnel Needs and Changing Reference Service. Library Professional Publications, 1989.

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