Cita APA (7th ed.)
Hutchins, R. M., & Adler, M. J. The Great Ideas Today: 1975. Encyclopaedia Britannica.
Cita Chicago (17th ed.)
Hutchins, Robert Maynard, i Mortimer J. Adler. The Great Ideas Today: 1975. Chicago, EUA: Encyclopaedia Britannica.
Cita MLA (9th ed.)
Hutchins, Robert Maynard, i Mortimer J. Adler. The Great Ideas Today: 1975. Encyclopaedia Britannica.
Atenció: Aquestes cites poden no estar 100% correctes.