Não informado. (1971). Forestry Research Newsletter. Great Lakes Forest Research Centre.
Style de citation Chicago (17e éd.)Não informado. Forestry Research Newsletter. Sault Ste. Marie, Canada: Great Lakes Forest Research Centre, 1971.
Style de citation MLA (8e éd.)Não informado. Forestry Research Newsletter. Great Lakes Forest Research Centre, 1971.
Attention : ces citations peuvent ne pas être correctes à 100%.