Morey, G. B. (1998). Mineral development in Minnesota: Past history, present trends, and future possibilities. Univ. of Minnesota.
Chicago-Zitierstil (17. Ausg.)Morey, Glenn B. Mineral Development in Minnesota: Past History, Present Trends, and Future Possibilities. Saint Paul: Univ. of Minnesota, 1998.
MLA-Zitierstil (9. Ausg.)Morey, Glenn B. Mineral Development in Minnesota: Past History, Present Trends, and Future Possibilities. Univ. of Minnesota, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.