(1896). [Notifying libraries of their designation as geological depositories, with list of Geological Survey publications;circular letter from Superintendent of Documents]. [publisher not identified].
Chicago Style (17th ed.) Citation[Notifying Libraries of Their Designation as Geological Depositories, with List of Geological Survey Publications;circular Letter from Superintendent of Documents]. Washington, D.C.: [publisher not identified], 1896.
MLA (9th ed.) Citation[Notifying Libraries of Their Designation as Geological Depositories, with List of Geological Survey Publications;circular Letter from Superintendent of Documents]. [publisher not identified], 1896.
Warning: These citations may not always be 100% accurate.