Primary references

• Gray, A. (1868) Proceedings of the American Academy of Arts and Sciences 7: 389.

• Cribb, P. 1997. The Genus Cypripedium. Portland, Oregon: Timber Press ("Botanical Magazine Monographs"); Royal Botanical Gardens, Kew. ISBN 0-88192-403-2
• Eccarius, W. 2009. Die Orchideengattung Cypripedium. Phylogenie, Taxonomie, Morphologie, Biologie, Verbreitung, Ökologie, Hybridisation. Bürgel, Germany: EchinoMedia Verlag Dr. Kerstin Ramm, 384 pp. ISBN 978-3-937107-19-6 Reference page. 
• Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (eds.) 1999. Genera Orchidacearum Volume 1: General Introduction, Apostasioideae, Cypripedioideae; page 114 ff., Oxford: Oxford University Press. ISBN 0-198505-13-2
  

Links

• Govaerts, R. et al. 2019. Cypripedium californicum in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2019 September 28.
• Govaerts, R. et al. 2019. Cypripedium californicum in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2019 September 28.
• International Plant Names Index. 2019. Cypripedium californicum. Published online. Accessed 28 September 2019.
• The Plant List 2013. Cypripedium californicum in The Plant List Version 1.1. Published on the internet. Accessed: 2019 September 28.
• Tropicos.org 2019. Cypripedium californicum . Missouri Botanical Garden. Published on the internet. Accessed: 2019 September 28.