Cather et al. 2008. Cather, S. M.; Connell, S. D.; Chamberlin, R. M.; McIntosh, W. C.; Jones, G. E.; Potochnik, A. R.; Lucas, S. G.; Johnson, P. S. (2008-01-01). "The Chuska erg: Paleogeomorphic and paleoclimatic implications of an Oligocene sand sea on the Colorado Plateau". Geological Society of America Bulletin. 120 (1–2): 13–33. Bibcode:2008GSAB..120...13C. doi:10.1130/B26081.1.
Cather et al. 2008. Cather, S. M.; Connell, S. D.; Chamberlin, R. M.; McIntosh, W. C.; Jones, G. E.; Potochnik, A. R.; Lucas, S. G.; Johnson, P. S. (2008-01-01). "The Chuska erg: Paleogeomorphic and paleoclimatic implications of an Oligocene sand sea on the Colorado Plateau". Geological Society of America Bulletin. 120 (1–2): 13–33. Bibcode:2008GSAB..120...13C. doi:10.1130/B26081.1.