British Standards Institution. (1972). Method for determination of sulphated ash from lubricating oils and additives. B.S.I..
Chicago Style (17th ed.) CitationBritish Standards Institution. Method for Determination of Sulphated Ash from Lubricating Oils and Additives. London: B.S.I., 1972.
MLA (8th ed.) CitationBritish Standards Institution. Method for Determination of Sulphated Ash from Lubricating Oils and Additives. B.S.I., 1972.
Warning: These citations may not always be 100% accurate.