Dyfyniad APA

Sumner, J. S. (1969). Geophysics,geologic structures and tectonics. WM C. Brown Pub.

Dyfyniad Arddull Chicago

Sumner, John Stewart. Geophysics,geologic Structures and Tectonics. Dubuque,Iowa: WM C. Brown Pub, 1969.

Dyfyniad MLA

Sumner, John Stewart. Geophysics,geologic Structures and Tectonics. WM C. Brown Pub, 1969.

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