Dyfyniad APA

(2020). Vietnam Journal of earth sciences. Ha Noi: Vietnam Academy of Science and Technology.

Dyfyniad Arddull Chicago

Vietnam Journal of Earth Sciences. Ha Noi: Vietnam Academy of Science and Technology, 2020.

Dyfyniad MLA

Vietnam Journal of Earth Sciences. Ha Noi: Vietnam Academy of Science and Technology, 2020.

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