Amsonia tharpii
Sivinski, R., T. Neville, E. Muldavin, and H. Hulse. 2014. Status survey for Tharp's blue-star in the Carlsbad, New Mexico area. Natural Heritage New Mexico Publ. No. 14-GTR-384. Natural Heritage New Mexico, University of New Mexico, Albuquerque, NM. 64 p
S95SIVSBNMUS, Legacy reference. Physical copy not yet located.
S90DUNSBNMUS, Legacy reference. Physical copy not yet located.
Sivinski, R. 2014. E-mail regarding EO ranks for Amsonia tharpii. Sent to E. Muldavin, Natural Heritage New Mexico.
Sivinski, B. 2013. Amsonia tharpii field data, summer 2013. File geodatabase to NHNM.
University of New Mexico Herbarium. 2000. Excel spreadsheet containing herbarium specimen records for LE, LT, C and SCF species.
Howard, M. 2007. Inventory of Tharp's bluestar in the Carlsbad Area: report on 2006 field work. Bureau of Land Management, New Mexico State Office. 24p.
Daniela, R. 2019. STATUS SURVEY AND REPORT FOR THARP’S BLUESTAR (AMSONIA THARPII) 2019. EMNRD.
Bureau of Land Management. 2010. Red Lake area surveys for Amsonia tharpii. Carlsbad Field Office.