United States. Bureau of Mines. (1938). Petroleum refineries, including cracking plants, in United States, Jan. 1, 1938. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Mines. Petroleum Refineries, Including Cracking Plants, in United States, Jan. 1, 1938. [Washington]: [s.n.], 1938.
MLA (9th ed.) CitationUnited States. Bureau of Mines. Petroleum Refineries, Including Cracking Plants, in United States, Jan. 1, 1938. [s.n.], 1938.
Warning: These citations may not always be 100% accurate.