Blyth, S.; Groombridge, B.; Lysenko, I.; Miles, L.; Newton, A. (2002). "Mountain Watch"(PDF). UNEP World Conservation Monitoring Centre, Cambridge, UK. मूल(PDF) से 11 May 2008 को पुरालेखित. अभिगमन तिथि 17 February 2009.
Ziegler, P.A.; Dèzes, P. (July 2007). "Cenozoic uplift of Variscan Massifs in the Alpine foreland: Timing and controlling mechanisms". Global and Planetary Change. 58 (1–4): 237–269. डीओआइ:10.1016/j.gloplacha.2006.12.004. बिबकोड:2007GPC....58..237Z.
Ver Straeten, Charles A. (July 2013). "Beneath it all: bedrock geology of the Catskill Mountains and implications of its weathering: Bedrock geology and weathering of the Catskills". Annals of the New York Academy of Sciences. 1298: 1–29. PMID23895551. डीओआइ:10.1111/nyas.12221.
Ziegler, P.A.; Dèzes, P. (July 2007). "Cenozoic uplift of Variscan Massifs in the Alpine foreland: Timing and controlling mechanisms". Global and Planetary Change. 58 (1–4): 237–269. डीओआइ:10.1016/j.gloplacha.2006.12.004. बिबकोड:2007GPC....58..237Z.
Ver Straeten, Charles A. (July 2013). "Beneath it all: bedrock geology of the Catskill Mountains and implications of its weathering: Bedrock geology and weathering of the Catskills". Annals of the New York Academy of Sciences. 1298: 1–29. PMID23895551. डीओआइ:10.1111/nyas.12221.
Blyth, S.; Groombridge, B.; Lysenko, I.; Miles, L.; Newton, A. (2002). "Mountain Watch"(PDF). UNEP World Conservation Monitoring Centre, Cambridge, UK. मूल(PDF) से 11 May 2008 को पुरालेखित. अभिगमन तिथि 17 February 2009.