APA
Anderson R., McKay R. & US Geological Survey.Clastic rocks associated with the midcontinent rift system in Iowa. : .
Chicago
Anderson Raymond, McKay Robert and US Geological Survey.Clastic rocks associated with the midcontinent rift system in Iowa. : .
Harvard
Anderson R., McKay R. and US Geological Survey.Clastic rocks associated with the midcontinent rift system in Iowa. : .
MLA
Anderson Raymond, McKay Robert and US Geological Survey.: . .