Cofnodi Dyfyniadau

Dyfyniad APA

(2003). Kỳ quan thiên nhiên thế giới =: Natural wonders of the world. Hà Nội: Mỹ Thuật.

Dyfyniad Arddull Chicago

Kỳ Quan Thiên Nhiên Thế Giới =: Natural Wonders of the World. Hà Nội: Mỹ Thuật, 2003.

Dyfyniad MLA

Kỳ Quan Thiên Nhiên Thế Giới =: Natural Wonders of the World. Hà Nội: Mỹ Thuật, 2003.

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