APA (7th ed.) Zitazioa
Society of Petroleum Engineers. (1997). Drilling fluids. Society of Petroleum Engineers.
Chicago Style (17th ed.) Zitazioa
Society of Petroleum Engineers. Drilling Fluids. Texas: Society of Petroleum Engineers, 1997.
MLA (9th ed.) Zitazioa
Society of Petroleum Engineers. Drilling Fluids. Society of Petroleum Engineers, 1997.
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