APA (7th ed.) Citation

United States. Bureau of Mines. (1921). National and international mine-rescue and first-aid meets. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. National and International Mine-rescue and First-aid Meets. [Washington]: [publisher not identified], 1921.

MLA (9th ed.) Citation

United States. Bureau of Mines. National and International Mine-rescue and First-aid Meets. [publisher not identified], 1921.

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