Adler, M. J. (1997). Six great ideas: Truth, goodness, beauty : ideas we judge by; liberty, equality, justice : ideas we act on. Simon & Schuster.
Chicago-viite (17. p.)Adler, Mortimer Jerome. Six Great Ideas: Truth, Goodness, Beauty : Ideas We Judge by; Liberty, Equality, Justice : Ideas We Act on. New York: Simon & Schuster, 1997.
MLA-viite (9. p.)Adler, Mortimer Jerome. Six Great Ideas: Truth, Goodness, Beauty : Ideas We Judge by; Liberty, Equality, Justice : Ideas We Act on. Simon & Schuster, 1997.
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