Douglas, E. M. (1939). Boundaries, areas, geographic centers, and altitudes of the United States and the several states: With a brief record of important changes in their territory and government. United States Government Printing Office.
Cita Chicago Style (17a ed.)Douglas, Edward Morehouse. Boundaries, Areas, Geographic Centers, and Altitudes of the United States and the Several States: With a Brief Record of Important Changes in Their Territory and Government. Washington: United States Government Printing Office, 1939.
Cita MLA (9a ed.)Douglas, Edward Morehouse. Boundaries, Areas, Geographic Centers, and Altitudes of the United States and the Several States: With a Brief Record of Important Changes in Their Territory and Government. United States Government Printing Office, 1939.
