Pettyjohn, W. A. (1967). Geological Survey Geohydrology of the Souris River valley in the vicinity of Monot, North Dakota. Washington: United States Government Printing Office.
Citación estilo ChicagoPettyjohn, Wayne A. Geological Survey Geohydrology of the Souris River Valley in the Vicinity of Monot, North Dakota. Washington: United States Government Printing Office, 1967.
Cita MLAPettyjohn, Wayne A. Geological Survey Geohydrology of the Souris River Valley in the Vicinity of Monot, North Dakota. Washington: United States Government Printing Office, 1967.
Warning: These citations may not always be 100% accurate.