Hänvisningar gällande denna post

APA-referens (7:e uppl.)
Estados Unidos Geological Survey. (19). Sections showing development along fissures from Ahmeek mine to Pennsylvania mine, Keweenaw counyy, Mich. U. S. Geological Survey.
Chicago-referens (17:e uppl.)
Estados Unidos Geological Survey. Sections Showing Development Along Fissures from Ahmeek Mine to Pennsylvania Mine, Keweenaw Counyy, Mich. U. S. Geological Survey, 19.
MLA-referens (9:e uppl.)
Estados Unidos Geological Survey. Sections Showing Development Along Fissures from Ahmeek Mine to Pennsylvania Mine, Keweenaw Counyy, Mich. U. S. Geological Survey, 19.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.