Mopper, Susan; Mitton, Jeffry B.; Whitham, Thomas G.; Cobb, Neil S.; Christensen, Kerry M. (June 1991). "Genetic Differentiation and Heterozygosity in Pinyon Pine Associated with Resistance to Herbivory and Environmental Stress". Evolution. 45 (4): 989–999. doi:10.2307/2409704. JSTOR2409704. PMID28564059.
Bentancourt, Julio L.; Schuster, William S.; Mitton, Jeffry B.; Anderson, R. Scott (October 1991). "Fossil and Genetic History of a Pinyon Pine (Pinus Edulis) Isolate". Ecology. 72 (5): 1685–1697. Bibcode:1991Ecol...72.1685B. doi:10.2307/1940968. JSTOR1940968.
Bentancourt, Julio L.; Schuster, William S.; Mitton, Jeffry B.; Anderson, R. Scott (October 1991). "Fossil and Genetic History of a Pinyon Pine (Pinus Edulis) Isolate". Ecology. 72 (5): 1685–1697. Bibcode:1991Ecol...72.1685B. doi:10.2307/1940968. JSTOR1940968.
Malusa, J. (March 1992). "Phylogeny and biogeography of the pinyon pines (Pinus subsect. Cembroides)". Systematic Botany. 7 (1): 42–66. doi:10.2307/2419064. JSTOR2419064.
Mopper, Susan; Mitton, Jeffry B.; Whitham, Thomas G.; Cobb, Neil S.; Christensen, Kerry M. (June 1991). "Genetic Differentiation and Heterozygosity in Pinyon Pine Associated with Resistance to Herbivory and Environmental Stress". Evolution. 45 (4): 989–999. doi:10.2307/2409704. JSTOR2409704. PMID28564059.
Bentancourt, Julio L.; Schuster, William S.; Mitton, Jeffry B.; Anderson, R. Scott (October 1991). "Fossil and Genetic History of a Pinyon Pine (Pinus Edulis) Isolate". Ecology. 72 (5): 1685–1697. Bibcode:1991Ecol...72.1685B. doi:10.2307/1940968. JSTOR1940968.
Mopper, Susan; Mitton, Jeffry B.; Whitham, Thomas G.; Cobb, Neil S.; Christensen, Kerry M. (June 1991). "Genetic Differentiation and Heterozygosity in Pinyon Pine Associated with Resistance to Herbivory and Environmental Stress". Evolution. 45 (4): 989–999. doi:10.2307/2409704. JSTOR2409704. PMID28564059.