Dyfyniad APA
Bratvold, R. B., & Begg, S. (2010). Making good decisions. Society of Petroleum Engineers.
Dyfyniad Arddull Chicago
Bratvold, Reidar B., and Steve Begg. Making Good Decisions. Richardson, TX: Society of Petroleum Engineers, 2010.
Dyfyniad MLA
Bratvold, Reidar B., and Steve Begg. Making Good Decisions. Society of Petroleum Engineers, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.