Dyfyniad APA

(1987). World Book Student handbook: Information Finder. World Book-Childcraft International.

Dyfyniad Arddull Chicago

World Book Student Handbook: Information Finder. Chicago: World Book-Childcraft International, 1987.

Dyfyniad MLA

World Book Student Handbook: Information Finder. World Book-Childcraft International, 1987.

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