American Society for Testing and Materials. (1999). Standard test method for softening point of pitches (mettler softening point method). ASTM.
Chicago Style (17th ed.) CitationAmerican Society for Testing and Materials. Standard Test Method for Softening Point of Pitches (mettler Softening Point Method). Philadelphia: ASTM, 1999.
MLA (9th ed.) CitationAmerican Society for Testing and Materials. Standard Test Method for Softening Point of Pitches (mettler Softening Point Method). ASTM, 1999.
Warning: These citations may not always be 100% accurate.