Dyfyniad APA

(1991). World atlas for intermediate students. New York: Macmillan/McGraw-Hill.

Dyfyniad Arddull Chicago

World Atlas for Intermediate Students. New York: Macmillan/McGraw-Hill, 1991.

Dyfyniad MLA

World Atlas for Intermediate Students. New York: Macmillan/McGraw-Hill, 1991.

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