Gaya APA

Service, P, E., Contra, I, A, O, D. (1982). Lessons in rotary drilling. unit V lesson 5. diving and equipment. (1982). : Texas : Petroleum Extension Service,.

Gaya MLA

Service, Petroleum, Extension., Contra, Inter., Ass., Of, Drilling. "Lessons in rotary drilling. unit V lesson 5. diving and equipment.". 1982 : Texas : Petroleum Extension Service,, 1982. Text.