Dyfyniad APA

(1981). Proceedings earth and planetary sciences, 1981, Vol.090, No.01-04.

Dyfyniad Arddull Chicago

Proceedings Earth and Planetary Sciences, 1981, Vol.090, No.01-04. Indian Academy of Science, Bangalore, 1981.

Dyfyniad MLA

Proceedings Earth and Planetary Sciences, 1981, Vol.090, No.01-04. 1981.

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