United States. Bureau of Mines. (1921). Recent articles on petroleum and allied substances. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Mines. Recent Articles on Petroleum and Allied Substances. [Washington]: [publisher not identified], 1921.
MLA (9th ed.) CitationUnited States. Bureau of Mines. Recent Articles on Petroleum and Allied Substances. [publisher not identified], 1921.
Warning: These citations may not always be 100% accurate.