Não informado. (2016). Canadian Forestry Service Research Notes. Environment Canada, Forestry Service.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Canadian Forestry Service Research Notes. Ottawa: Environment Canada, Forestry Service, 2016.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Canadian Forestry Service Research Notes. Environment Canada, Forestry Service, 2016.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.