Cohen, James I.; Davis, Jerrold I. (2009). "Nomenclatural changes in Lithospermum (Boraginaceae) and related taxa following a reassessment of phylogenetic relationships". Brittonia. 61 (2): 101–111. Bibcode:2009Britt..61..101C. doi:10.1007/s12228-009-9082-z. S2CID31935880.
Cohen, James I.; Davis, Jerrold I. (2009). "Nomenclatural changes in Lithospermum (Boraginaceae) and related taxa following a reassessment of phylogenetic relationships". Brittonia. 61 (2): 101–111. Bibcode:2009Britt..61..101C. doi:10.1007/s12228-009-9082-z. S2CID31935880.
Cohen, James I.; Davis, Jerrold I. (2009). "Nomenclatural changes in Lithospermum (Boraginaceae) and related taxa following a reassessment of phylogenetic relationships". Brittonia. 61 (2): 101–111. Bibcode:2009Britt..61..101C. doi:10.1007/s12228-009-9082-z. S2CID31935880.