Detterman, R.L.; Case, J.E.; Miller, J.W.; Wilson, F.H.; Yount, M.E. (1996). "Stratigraphic Framework of the Alaska Peninsula"(PDF). United States Geological Survey Bulletin. 1969-A: 46–48. Archived from the original(PDF) on 2012-04-15. Retrieved 2012-12-17.
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Detterman, R.L.; Case, J.E.; Miller, J.W.; Wilson, F.H.; Yount, M.E. (1996). "Stratigraphic Framework of the Alaska Peninsula"(PDF). United States Geological Survey Bulletin. 1969-A: 46–48. Archived from the original(PDF) on 2012-04-15. Retrieved 2012-12-17.