APA (7th ed.) Citation

Helms, J. A. (1998). The dictionary of forestry. Society of American Foresters.

Chicago Style (17th ed.) Citation

Helms, John A. The Dictionary of Forestry. Bethesda, MD: Society of American Foresters, 1998.

MLA (8th ed.) Citation

Helms, John A. The Dictionary of Forestry. Society of American Foresters, 1998.