Dorrance, A. E., Neely, R. D., Endress, A. G., Smith, M. A. 1., & Smith, G. R. (1991). A compendium of information on tree health care: Including diseases, insects, weeds, and cultural practices. Illinois: Illinois Natural History Survey.

Dorrance, A. E., R. D. Neely, A. G. Endress, Marion Ashton 1897- Smith, and G. R. Smith. A Compendium of Information On Tree Health Care: Including Diseases, Insects, Weeds, and Cultural Practices. Illinois: Illinois Natural History Survey, 1991.

Dorrance, A. E., et al. A Compendium of Information On Tree Health Care: Including Diseases, Insects, Weeds, and Cultural Practices. Illinois: Illinois Natural History Survey, 1991.