Hodgkinson, Harmon S. (May 1983). "Relationship between Cutler Mormon-Tea [Ephedra cutleri] and Coppice Dunes in Determining Range Trend in Northeastern Arizona". Journal of Range Management. 36 (3): 375–377. doi:10.2307/3898491. hdl:10150/645912. JSTOR3898491.
Loera, Israel; Sosa, Victoria; Ickert-Bond, Stefanie M. (November 2012). "Diversification in North American arid lands: Niche conservatism, divergence and expansion of habitat explain speciation in the genus Ephedra". Molecular Phylogenetics and Evolution. 65 (2): 437–450. doi:10.1016/j.ympev.2012.06.025. PMID22776548.
Price, Robert A. (November 1996). "Systematics of the Gnetales: A Review of Morphological and Molecular Evidence". International Journal of Plant Sciences. 157 (S6): S40–S49. doi:10.1086/297402. JSTOR2475207. S2CID85382873.
Hodgkinson, Harmon S. (May 1983). "Relationship between Cutler Mormon-Tea [Ephedra cutleri] and Coppice Dunes in Determining Range Trend in Northeastern Arizona". Journal of Range Management. 36 (3): 375–377. doi:10.2307/3898491. hdl:10150/645912. JSTOR3898491.
Hodgkinson, Harmon S. (May 1983). "Relationship between Cutler Mormon-Tea [Ephedra cutleri] and Coppice Dunes in Determining Range Trend in Northeastern Arizona". Journal of Range Management. 36 (3): 375–377. doi:10.2307/3898491. hdl:10150/645912. JSTOR3898491.
Price, Robert A. (November 1996). "Systematics of the Gnetales: A Review of Morphological and Molecular Evidence". International Journal of Plant Sciences. 157 (S6): S40–S49. doi:10.1086/297402. JSTOR2475207. S2CID85382873.
Loera, Israel; Sosa, Victoria; Ickert-Bond, Stefanie M. (November 2012). "Diversification in North American arid lands: Niche conservatism, divergence and expansion of habitat explain speciation in the genus Ephedra". Molecular Phylogenetics and Evolution. 65 (2): 437–450. doi:10.1016/j.ympev.2012.06.025. PMID22776548.
Price, Robert A. (November 1996). "Systematics of the Gnetales: A Review of Morphological and Molecular Evidence". International Journal of Plant Sciences. 157 (S6): S40–S49. doi:10.1086/297402. JSTOR2475207. S2CID85382873.