Dyfyniad APA

(2000). Log interpretation charts (2000 ed.). Schlumberger Educational Services.

Dyfyniad Arddull Chicago

Log Interpretation Charts. 2000 ed. Houston, Tex.: Schlumberger Educational Services, 2000.

Dyfyniad MLA

Log Interpretation Charts. 2000 ed. Schlumberger Educational Services, 2000.

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