Dyfyniad APA

Ashcroft, W. (2011). A petroleum geologist's guide to seismic reflection. Blackwell.

Dyfyniad Arddull Chicago

Ashcroft, William. A Petroleum Geologist's Guide to Seismic Reflection. U.k: Blackwell, 2011.

Dyfyniad MLA

Ashcroft, William. A Petroleum Geologist's Guide to Seismic Reflection. Blackwell, 2011.

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