Washington Natural Heritage Program. (1982). Washington Natural Heritage Program report. Dept. of Natural Resources.
Style de citation Chicago (17e éd.)Washington Natural Heritage Program. Washington Natural Heritage Program Report. [Olympia]: Dept. of Natural Resources, 1982.
Style de citation MLA (8e éd.)Washington Natural Heritage Program. Washington Natural Heritage Program Report. Dept. of Natural Resources, 1982.
Attention : ces citations peuvent ne pas être correctes à 100%.