APA (7th ed.) Citation

United States. Bureau of Mines, North, O. S., & Chandler, H. P. (1953). Vermiculite. Gov't..

Chicago Style (17th ed.) Citation

United States. Bureau of Mines, Oliver S. North, and Henry P. Chandler. Vermiculite. n.p.: Gov't., 1953.

MLA (8th ed.) Citation

United States. Bureau of Mines, et al. Vermiculite. Gov't., 1953.

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