Langer, S., Scheer, J. Raise your I.Q.. New York: Kensington, 1999 238 p. 1-57566-342-2.
Langer, S., Scheer, J. Raise your I.Q.. New York: Kensington, 1999 238 p. 1-57566-342-2.
Langer, S., Scheer, J. (1999) Raise your I.Q., New York: Kensington 238 p. 1-57566-342-2.
Langer, S., & Scheer, J. (1999). Raise your I.Q.. 7 ways to boost your mind power - no matter what your age. New York: Kensington, 238 p.
Langer S, Scheer J. Raise your I.Q.: 7 ways to boost your mind power - no matter what your age. New York: Kensington; 1999. p. 238 p. ISBN: 1-57566-342-2.
