APA (7th ed.) Citation

Bruce, D., & Cowlin, R. W. (1968). Timber measurement problems in the Douglas-fir region of Washington and Oregon. Pacific Northwest Forest and Range Experiment Station.

Chicago Style (17th ed.) Citation

Bruce, David, and Robert W. Cowlin. Timber Measurement Problems in the Douglas-fir Region of Washington and Oregon. [Portland, Or.]: Pacific Northwest Forest and Range Experiment Station, 1968.

MLA (8th ed.) Citation

Bruce, David, and Robert W. Cowlin. Timber Measurement Problems in the Douglas-fir Region of Washington and Oregon. Pacific Northwest Forest and Range Experiment Station, 1968.

Warning: These citations may not always be 100% accurate.