Cita APA

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

Citación estilo Chicago

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

Cita MLA

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