Cita APA (7a ed.)

Emmons, W. H., & Grout, F. F. (1943). Mineral resources of Minnesota. The University of Minnesota press.

Cita Chicago Style (17a ed.)

Emmons, William H., y Frank F. Grout. Mineral Resources of Minnesota. Minneapolis: The University of Minnesota press, 1943.

Cita MLA (9a ed.)

Emmons, William H., y Frank F. Grout. Mineral Resources of Minnesota. The University of Minnesota press, 1943.