Dyfyniad APA
Hill, A. D., Zhu, D., & Economides, M. J. (2008). Multilateral wells. Society of Petroleum Engineers.
Dyfyniad Arddull Chicago
Hill, A. D., Ding Zhu, and Michael J. Economides. Multilateral Wells. Richardson, TX: Society of Petroleum Engineers, 2008.
Dyfyniad MLA
Hill, A. D., et al. Multilateral Wells. Society of Petroleum Engineers, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.