APA (7th ed.) Citation

Geological Survey (U.S.) & ProQuest (Firm). (1923). Contributions to economic geology 1922. Part II. -- Mineral fuels. [publisher not identified].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Contributions to Economic Geology 1922. Part II. -- Mineral Fuels. Washington: [publisher not identified], 1923.

MLA (9th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Contributions to Economic Geology 1922. Part II. -- Mineral Fuels. [publisher not identified], 1923.

Warning: These citations may not always be 100% accurate.