Andreu, M. G., M. H. Friedman, M. McKenzie, H. V. Quintana, and R. J. Northrop. “Crataegus Marshallii, Parsley Hawthorn: FOR 255/FR317, 6/2010”. EDIS, vol. 2010, no. 4, July 2010, doi:10.32473/edis-fr317-2010.