Kirk Makepeace, George J. Simandl, Jade (Nephrite) in British Columbia, CanadaArkiverad 31 oktober 2016 hämtat från the Wayback Machine. Arkiverad 2016-10-31; in G.J. Simandl, W.J. McMillan and N.D. Robinson, (editors), 37th Annual Forum on Industrial Minerals Proceedings, Industrial Minerals with emphasis on Western North America, Paper 2004-2-57, pages 287–288 (2004). Accessed October 30, 2016
Kirk Makepeace, George J. Simandl, Jade (Nephrite) in British Columbia, CanadaArkiverad 31 oktober 2016 hämtat från the Wayback Machine. Arkiverad 2016-10-31; in G.J. Simandl, W.J. McMillan and N.D. Robinson, (editors), 37th Annual Forum on Industrial Minerals Proceedings, Industrial Minerals with emphasis on Western North America, Paper 2004-2-57, pages 287–288 (2004). Accessed October 30, 2016