@book{171429,
	author = {Arnold, Ken},
	title = {The engineering company conundrum},
	year = {abr. 2009},
	note = {This article is the second in a two-part series that examines the status of engineering companies in the oil and gas industry, where they have been, and where they are going in a time of tremendous change. The first article was published as "Another Perspective" in the March issue of E&P.}
}