Não informado. (2016). Branch Lines. University of British Columbia, Faculty of Forestry.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Branch Lines. Vancouver, Canada: University of British Columbia, Faculty of Forestry, 2016.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Branch Lines. University of British Columbia, Faculty of Forestry, 2016.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.