Cita APA (7a ed.)

The University of Chicago. (1948). Encyclopaedia Britannica 9: A new survey of universal knowledge. Encyclopaedia Britannica.

Cita Chicago Style (17a ed.)

The University of Chicago. Encyclopaedia Britannica 9: A New Survey of Universal Knowledge. Chicago: Encyclopaedia Britannica, 1948.

Cita MLA (9a ed.)

The University of Chicago. Encyclopaedia Britannica 9: A New Survey of Universal Knowledge. Encyclopaedia Britannica, 1948.