- Malheur Experiment Station
Shock, C. C., Feibert, E. B. G., Rivera, A., Saunders, L. D., Shaw, N. L., & Kilkenny, F. 2018. Irrigation Requirements for Seed Production of Five Native Penstemon Species. pp. 189-201. In Shock C.C. (Ed.) Oregon State University Agricultural Experiment Station, Malheur Experiment Station Annual Report 2017, Department of Crop and Soil Science Ext/CrS 159.