APA (7e ed.) Bronvermelding

Adler, M. J. (1981). Six great ideas: Truth, goodness, beauty, liberty, equality, justice : ideas we judge by, ideas we act on. Macmillan.

Chicago (17e ed.) Bronvermelding

Adler, Mortimer Jerome. Six Great Ideas: Truth, Goodness, Beauty, Liberty, Equality, Justice : Ideas We Judge by, Ideas We Act on. New York: Macmillan, 1981.

MLA (9e ed.) Bronvermelding

Adler, Mortimer Jerome. Six Great Ideas: Truth, Goodness, Beauty, Liberty, Equality, Justice : Ideas We Judge by, Ideas We Act on. Macmillan, 1981.