APA (7th ed.) Citation

Hewitt, E. A. (1930). Mining methods and costs at Park Utah mine, Park City, Utah. [publisher not identified].

Chicago Style (17th ed.) Citation

Hewitt, E. A. Mining Methods and Costs at Park Utah Mine, Park City, Utah. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Hewitt, E. A. Mining Methods and Costs at Park Utah Mine, Park City, Utah. [publisher not identified], 1930.