Bretz, J. H. (1959). Washington's channeled scabland. Division of Mines and Geology, Washington Dept. of Conservation.
Cita Chicago Style (17a ed.)Bretz, J. Harlen. Washington's Channeled Scabland. Olympia: Division of Mines and Geology, Washington Dept. of Conservation, 1959.
Cita MLA (8a ed.)Bretz, J. Harlen. Washington's Channeled Scabland. Division of Mines and Geology, Washington Dept. of Conservation, 1959.
Precaución: Estas citas no son 100% exactas.