1. Banner, A., MacKenzie, W., Haeussler, S., Thompson, S., Pojar, J., Trowbridge, R., 1993. A field guide to site identification and interpretation for the Prince Rupert Forest Region. Research Branch, BC Ministry of Forests, 31 Bastion Square, Victoria BC.
2. Plant – plant interactions in successional environments;Bazzaz,1990
3. BC Ministry of Forests Lands and Natural Resource Operations, 2017. Site Tools v4.1 for white spruce.
4. Environmental factors influencing basidiospore discharge in Polyporus tomentosus;Bohaychuk;Can. J. Bot.,1973
5. Yield differences between research plots and managed forests;Bruce;J. For.,1977