Yli-Jokipii, P. (1971). Recent trends in mining activity in the upper peninsula of Michigan and their effect on regional development.
Chicago-Zitierstil (17. Ausg.)Yli-Jokipii, Pentti. Recent Trends in Mining Activity in the Upper Peninsula of Michigan and Their Effect on Regional Development. Helsinki, 1971.
MLA-Zitierstil (9. Ausg.)Yli-Jokipii, Pentti. Recent Trends in Mining Activity in the Upper Peninsula of Michigan and Their Effect on Regional Development. 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.