Tishler, W. H. (2006). Door County's emerald treasure: A history of Peninsula State Park. University of Wisconsin Press.
Chicago-Zitierstil (17. Ausg.)Tishler, William H. Door County's Emerald Treasure: A History of Peninsula State Park. Madison: University of Wisconsin Press, 2006.
MLA-Zitierstil (9. Ausg.)Tishler, William H. Door County's Emerald Treasure: A History of Peninsula State Park. University of Wisconsin Press, 2006.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.