APA

Churkin M., Carter C. & United States Geological Survey. (1996). Stratigraphy, Structure, And Graptolites of an Ordovician and Silurian Sequence in the Terra Cotta Mountains, Alaska Range, Alaska. Washington: United States Government Printing Office.

Chicago

Churkin Michael, Carter Claire and United States Geological Survey. 1996. Stratigraphy, Structure, And Graptolites of an Ordovician and Silurian Sequence in the Terra Cotta Mountains, Alaska Range, Alaska. Washington: United States Government Printing Office.

Harvard

Churkin M., Carter C. and United States Geological Survey. (1996). Stratigraphy, Structure, And Graptolites of an Ordovician and Silurian Sequence in the Terra Cotta Mountains, Alaska Range, Alaska. Washington: United States Government Printing Office.

MLA

Churkin Michael, Carter Claire and United States Geological Survey. Stratigraphy, Structure, And Graptolites of an Ordovician and Silurian Sequence in the Terra Cotta Mountains, Alaska Range, Alaska. Washington: United States Government Printing Office. 1996.