Gaya APA

(API), A, P, I. (1986). Recommended practice on application, care, and use of wire rope for oilfield service. API Recommended Practice 9B (RP 9B). (1986). : Washington DC : American Petroleum Inst.,.

Gaya MLA

(API), American, Petrol., Inst.. "Recommended practice on application, care, and use of wire rope for oilfield service. API Recommended Practice 9B (RP 9B).". 1986 : Washington DC : American Petroleum Inst.,, 1986. Text.