Gaya APA

Service, P, E., Contra, I, A, O, D. (975.). Lessons in rotary drilling. Unit III Lesson 2. open hole fishing. (1975). : Texas : Petroleum Extension Service, 1.

Gaya MLA

Service, Petroleum, Extension., Contra, Inter., Ass., Of, Drilling. "Lessons in rotary drilling. Unit III Lesson 2. open hole fishing.". 1975 : Texas : Petroleum Extension Service, 1, 975.. Text.