Dyfyniad APA

DON, L. Earthquake: Discoveries in seismology. Dell Publishing.

Dyfyniad Arddull Chicago

DON, L. Earthquake: Discoveries in Seismology. Dell Publishing.

Dyfyniad MLA

DON, L. Earthquake: Discoveries in Seismology. Dell Publishing.

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