Gaya APA

(API), A, P, I. (1976). Care and use of reinforced thermosetting resin casing and tubing. API RP 5A4 (1976). : Dallas : American Petroleum Inst.,.

Gaya MLA

(API), American, Petrol., Inst.. "Care and use of reinforced thermosetting resin casing and tubing. API RP 5A4". 1976 : Dallas : American Petroleum Inst.,, 1976. Text.