Não informado. (2016). Branch Lines. University of British Columbia, Faculty of Forestry.
Chicago-referens (17:e uppl.)Não informado. Branch Lines. Vancouver, Canada: University of British Columbia, Faculty of Forestry, 2016.
MLA-referens (8:e uppl.)Não informado. Branch Lines. University of British Columbia, Faculty of Forestry, 2016.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.