Dyfyniad APA

National diary research ins. (1980). Annual report 1980. Karnad.

Dyfyniad Arddull Chicago

National diary research ins. Annual Report 1980. Karnad, 1980.

Dyfyniad MLA

National diary research ins. Annual Report 1980. Karnad, 1980.

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