APA (7th ed.) Citation

Osborn, L. E., Gatchell, C. J., & Hassler, C. C. (1992). West Virginia yellow-poplar lumber defect database. United States Department of Agriculture, Forest Service, Northeastern Forest Experiment Station.

Chicago Style (17th ed.) Citation

Osborn, Lawrence E., Charles J. Gatchell, and Curt C. Hassler. West Virginia Yellow-poplar Lumber Defect Database. Radnor, Pennsylvania: United States Department of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1992.

MLA (9th ed.) Citation

Osborn, Lawrence E., et al. West Virginia Yellow-poplar Lumber Defect Database. United States Department of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1992.