Cita APA (7a ed.)

Rapp, G. R., & Wallace, D. T. (1966). Guide to mineral collecting in Minnesota. University of Minnesota.

Cita Chicago Style (17a ed.)

Rapp, G. R., y D. T. Wallace. Guide to Mineral Collecting in Minnesota. Minneapolis: University of Minnesota, 1966.

Cita MLA (9a ed.)

Rapp, G. R., y D. T. Wallace. Guide to Mineral Collecting in Minnesota. University of Minnesota, 1966.