APA (7th ed.) Citation

United States. Bureau of Mines. (1924). Float-and-sink test for fine coal. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Float-and-sink Test for Fine Coal. [Washington]: [publisher not identified], 1924.

MLA (9th ed.) Citation

United States. Bureau of Mines. Float-and-sink Test for Fine Coal. [publisher not identified], 1924.

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