Template:Egan, 1991a
- Egan, R.S. 1991. Changes to the “Fifth Checklist of the Lichen-Forming, Lichenicolous, and Allied Fungi of the Continental United States and Canada.” Edition III. The Bryologist 94(4): 396–404. RLL List # / Rec.# 4716 – Recent Literature on Lichens DOI: 10.2307/3243829