APA (7th ed.) Citation

Kelly, J. F., & Beltz, R. C. (1987). A comparison of tree volume estimation models for forest inventory. U.S. Dept. of Agriculture, Forest Service, Southern Forest Experiment Station.

Chicago Style (17th ed.) Citation

Kelly, John F., and Roy C. Beltz. A Comparison of Tree Volume Estimation Models for Forest Inventory. New Orleans, La.: U.S. Dept. of Agriculture, Forest Service, Southern Forest Experiment Station, 1987.

MLA (9th ed.) Citation

Kelly, John F., and Roy C. Beltz. A Comparison of Tree Volume Estimation Models for Forest Inventory. U.S. Dept. of Agriculture, Forest Service, Southern Forest Experiment Station, 1987.

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