Dyfyniad APA

American Library Association & Hiss, S. K. b. (1942). A. L. A. rules for filing catalog cards. American Library Association.

Dyfyniad Arddull Chicago

American Library Association and Sophie K. b1881- Hiss. A. L. A. Rules for Filing Catalog Cards. Chicago, Ill: American Library Association, 1942.

Dyfyniad MLA

American Library Association and Sophie K. b1881- Hiss. A. L. A. Rules for Filing Catalog Cards. American Library Association, 1942.

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