The Guinness encyclopedia of popular music, 2nd ed.: (Beck; b. Beck Hansen, ca. 1974)
Enc. of pop. mus., 3rd ed.: (Beck; b. Beck Hansen, July 8, 1970, Los Angeles, Calif.)
Martell, Nevin. Beck, c2001: CIP t.p. (Beck) p. 1 (b. Bek David Campbell)
His WWW site, May 4, 2001: (b. Bek David Campbell)
Int. ww in pop. mus., 13th ed.: (Beck; born Beck Hansen, July 8, 1970, Los Angeles, CA; American musician and singer)
Wikipedia, April 24, 2013: (Beck; Beck Hansen; born Bek David Campbell, July 8, 1970, Los Angeles, Calif.; American musician, singer-songwriter, and multi-instrumentalist)