Dunwiddie, Peter, Strömberg, Caroline_A E, and Whitlock, Cathy. Estella Bergere Leopold: Paleobotanist and conservationist extraordinaire. Retrieved from https://par.nsf.gov/biblio/10583372. Proceedings of the National Academy of Sciences 121.25 Web. doi:10.1073/pnas.2408242121.

Dunwiddie, Peter, Strömberg, Caroline_A E, & Whitlock, Cathy. Estella Bergere Leopold: Paleobotanist and conservationist extraordinaire. Proceedings of the National Academy of Sciences, 121 (25). Retrieved from https://par.nsf.gov/biblio/10583372. https://doi.org/10.1073/pnas.2408242121

Dunwiddie, Peter, Strömberg, Caroline_A E, and Whitlock, Cathy. "Estella Bergere Leopold: Paleobotanist and conservationist extraordinaire". Proceedings of the National Academy of Sciences 121 (25). Country unknown/Code not available: National Academy of Sciences. https://doi.org/10.1073/pnas.2408242121. https://par.nsf.gov/biblio/10583372.

@article{osti_10583372,
place = {Country unknown/Code not available}, title = {Estella Bergere Leopold: Paleobotanist and conservationist extraordinaire}, url = {https://par.nsf.gov/biblio/10583372}, DOI = {10.1073/pnas.2408242121}, abstractNote = {}, journal = {Proceedings of the National Academy of Sciences}, volume = {121}, number = {25}, publisher = {National Academy of Sciences}, author = {Dunwiddie, Peter and Strömberg, Caroline_A E and Whitlock, Cathy}, }