Cita APA (7a ed.)

(1985). The New Encyclopaedia Britannica (15th ed.). Encyclopaedia Britannica.

Cita Chicago Style (17a ed.)

The New Encyclopaedia Britannica. 15th ed. Chicago: Encyclopaedia Britannica, 1985.

Cita MLA (9a ed.)

The New Encyclopaedia Britannica. 15th ed. Encyclopaedia Britannica, 1985.