Cita APA (7a ed.)

(1992). The new encyclopaedia Britannica (15th ed.). Encyclopaedia Britannica.

Cita Chicago Style (17a ed.)

The New Encyclopaedia Britannica. 15th ed. Chicago [etc.]: Encyclopaedia Britannica, 1992.

Cita MLA (9a ed.)

The New Encyclopaedia Britannica. 15th ed. Encyclopaedia Britannica, 1992.