Gaya APA

Service., P, E. (1971). Lessons in well servicing and workover lesson 10. fishing tools and techniques. (1971). : Austin-texas : Petroleum Extension Service,.

Gaya MLA

Service., Petroleum, Extension. "Lessons in well servicing and workover lesson 10. fishing tools and techniques.". 1971 : Austin-texas : Petroleum Extension Service,, 1971. Text.