diff --git a/README.md b/README.md
index 6871531747976242e50b6666a2877e25d0aef94b..2479ee6a77e63acf70384b83d98a01fdf2644147 100644
--- a/README.md
+++ b/README.md
@@ -6,9 +6,10 @@ U.S. Geological Survey (USGS) hazard software [*nshmp-haz*][1].
 For details on the format of this model, see the *nshmp-haz*
 [user guide and implementation reference][2].
 
-For prior models, see the [USGS Seismic Hazard Maps][3] web page.
+## Model Editions
 
-DOI: <https://doi.org/10.5066/P97SQ3AQ> (version [2.0.0][4])
+* For prior model editions, see the [USGS Seismic Hazard Maps][3] web page.
+* Current edition: 2021, version [2.0.0][4].
 
 ## Model Notes
 
@@ -21,12 +22,17 @@ maps of seismic hazard from this model. The `sites-hawaii.geojson` and `sites-ha
 contain the test sites at which the USGS performs more detailed comparisons between model editions.
 See the *nshmp-haz* user guide [site specification section][5] for more details on these files.
 
-## Reference
+## References
 
-Petersen, M.D, Shumway, A.M., Powers, P.M., Moschetti, M.P., Llenos, A.L., Michael, A.J., Mueller,
-C.S., Frankel, A.D., Rezaeian, S., Rukstales, K.S., McNamara. D.E., Okubo, P.G., Zeng, Y., Jaiswal,
-K.S., Ahdi, S.K., Altekruse, J.M., and Shiro, B.R., 2021, 2021 U.S. National Seismic Hazard Model
-for the State of Hawaii, _Earthquake Spectra_, DOI: [10.1177/87552930211052061][6].
+**Model documentation:** Petersen, M.D, Shumway, A.M., Powers, P.M., Moschetti, M.P., Llenos, A.L.,
+Michael, A.J., Mueller, C.S., Frankel, A.D., Rezaeian, S., Rukstales, K.S., McNamara. D.E., Okubo,
+P.G., Zeng, Y., Jaiswal, K.S., Ahdi, S.K., Altekruse, J.M., and Shiro, B.R., 2021, 2021 U.S.
+National Seismic Hazard Model for the State of Hawaii, _Earthquake Spectra_, doi:
+[10.1177/87552930211052061][6].
+
+**Suggested citation:**  Powers, P.M. and Altekruse, J.M., 2022, nshm-hawaii:  National Seismic 
+Hazard Model for the State of Hawaii. U.S. Geological Survey software release. doi:
+[10.5066/P97SQ3AQ][7].
 
 [1]: https://code.usgs.gov/ghsc/nshmp/nshmp-haz
 [2]: https://code.usgs.gov/ghsc/nshmp/nshmp-haz/-/blob/main/docs/README.md
@@ -34,3 +40,4 @@ for the State of Hawaii, _Earthquake Spectra_, DOI: [10.1177/87552930211052061][
 [4]: https://code.usgs.gov/ghsc/nshmp/nshms/nshm-hawaii/-/tags/2.0.0
 [5]: https://code.usgs.gov/ghsc/nshmp/nshmp-haz/-/blob/main/docs/pages/Site-Specification.md
 [6]: https://doi.org/10.1177/87552930211052061
+[7]: https://doi.org/10.5066/P97SQ3AQ