APA (7th ed.) Citation

Lockard, C. R., Putnam, J. A., & Carpenter, R. D. (1963). Grade defects in hardwood timber and logs. U.S. Dept. of Agriculture, Forest Service.

Chicago Style (17th ed.) Citation

Lockard, C. R., J. A. Putnam, and Roswell D. Carpenter. Grade Defects in Hardwood Timber and Logs. Washington, D.C.: U.S. Dept. of Agriculture, Forest Service, 1963.

MLA (9th ed.) Citation

Lockard, C. R., et al. Grade Defects in Hardwood Timber and Logs. U.S. Dept. of Agriculture, Forest Service, 1963.