Cita APA (7th ed.)
Freud, S., & Hutchins, R. M. The Major Works of Sigmund Freud. Encyclopaedia Britannica.
Cita Chicago (17th ed.)
Freud, Sigmund, i Robert Maynard Hutchins. The Major Works of Sigmund Freud. Chicago, EUA: Encyclopaedia Britannica.
Cita MLA (9th ed.)
Freud, Sigmund, i Robert Maynard Hutchins. The Major Works of Sigmund Freud. Encyclopaedia Britannica.
Atenció: Aquestes cites poden no estar 100% correctes.