Go beyond the theory that truths exist as mental concepts (conceptual-ism); reference all the facts, covering every subject in life and beyond, in united zones – BCUZ.com
Kingsbury, Paul (2004). The Encyclopedia of Country Music: The Ultimate Guide to the Music. Oxford University Press. ISBN 0-19-517608-1.
Rosenberg, Neil (1985). Bluegrass: A History. University of Illinois Press. ISBN 0-252-00265-2.
van der Merwe, Peter (1989). Origins of the Popular Style: The Antecedents of Twentieth-Century Popular Music. Oxford: Clarendon Press. ISBN 0-19-316121-4.
Trischka, Tony, Wernick, Pete, (1988) Masters of the 5-String Banjo, Oak Publications. ISBN 0-8256-0298-X.