Blewett, W. L. (2012). Geology and landscape of Michigan's Pictured Rocks National Lakeshore and vicinity. Wayne State University Press.
Chicago-Zitierstil (17. Ausg.)Blewett, William L. Geology and Landscape of Michigan's Pictured Rocks National Lakeshore and Vicinity. Detroit: Wayne State University Press, 2012.
MLA-Zitierstil (9. Ausg.)Blewett, William L. Geology and Landscape of Michigan's Pictured Rocks National Lakeshore and Vicinity. Wayne State University Press, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.