Gaya APA

Petroleum, T, I, O. (1981). Methods for analysis and testing. IP standards for petroleum and its products part I vol. 2. (1981). : London : The Institute of Petroleum,.

Gaya MLA

Petroleum, The, Institute, Of. "Methods for analysis and testing. IP standards for petroleum and its products part I vol. 2.". 1981 : London : The Institute of Petroleum,, 1981. Text.