Lua APA (7ú heag.)

Não informado. (2016). Bi-Monthly Research Notes. Canadian Forestry Service, Department of Environment.

Lua i Stíl Chicago (17ú heag.)

Não informado. Bi-Monthly Research Notes. Ottawa: Canadian Forestry Service, Department of Environment, 2016.

Lua MLA (8ú heag.)

Não informado. Bi-Monthly Research Notes. Canadian Forestry Service, Department of Environment, 2016.

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