References
- Conifer Specialist Group (1998). Picea obovata. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 12 May 2006.
- Gymnosperm Database: Picea obovata
- Farjon, A. (1990). Pinaceae: Drawings and Descriptions of the Genera. Koeltz Scientific. ISBN 3-87429-298-3 .
- Staff of the Bailey Hortorium (2000). Hortus Third. Barnes and Noble Books. ISBN 0-7607-2116-5 p. 871.
Read more about this topic: Siberian Spruce