APA (7th ed.) Citation

Hopkins, R. L. (1964). Extraction of sulfides from petroleum fractions by conversion to sulfonium salts. U.S. Dept. of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

Hopkins, Ralph L. Extraction of Sulfides From Petroleum Fractions By Conversion to Sulfonium Salts. Washington, DC: U.S. Dept. of the Interior, Bureau of Mines, 1964.

MLA (8th ed.) Citation

Hopkins, Ralph L. Extraction of Sulfides From Petroleum Fractions By Conversion to Sulfonium Salts. U.S. Dept. of the Interior, Bureau of Mines, 1964.