APA (7e ed.) Bronvermelding

Não informado. (1971). Forestry Research Newsletter. Great Lakes Forest Research Centre.

Chicago (17e ed.) Bronvermelding

Não informado. Forestry Research Newsletter. Sault Ste. Marie, Canada: Great Lakes Forest Research Centre, 1971.

MLA (8e ed.) Bronvermelding

Não informado. Forestry Research Newsletter. Great Lakes Forest Research Centre, 1971.

Let op: Deze citaties zijn niet altijd 100% accuraat.