Beckham, S. D. (1978). Identifying and assessing historical cultural resources: Region 6, U.S.F.S. Forest Service, USDA, Pacific Northwest Region.
Cita Chicago Style (17a ed.)Beckham, Stephen Dow. Identifying and Assessing Historical Cultural Resources: Region 6, U.S.F.S. [Portland, Or.]: Forest Service, USDA, Pacific Northwest Region, 1978.
Cita MLA (8a ed.)Beckham, Stephen Dow. Identifying and Assessing Historical Cultural Resources: Region 6, U.S.F.S. Forest Service, USDA, Pacific Northwest Region, 1978.
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