^ abRogan, Johnny. (1998). The Byrds: Timeless Flight Revisited (2nd ed.). Rogan House. p. 551. ISBN0-9529540-1-X.
^ abHjort, Christopher. (2008). So You Want To Be A Rock 'n' Roll Star: The Byrds Day-By-Day (1965-1973). Jawbone Press. pp. 308–309. ISBN1-906002-15-0.
^Hjort, Christopher. (2008). So You Want To Be A Rock 'n' Roll Star: The Byrds Day-By-Day (1965-1973). Jawbone Press. pp. 286–287. ISBN1-906002-15-0.