Cita APA (7th ed.)

(1993). New Encyclopaedia Britannica (15th ed.). Encyclopaedia Britannica.

Cita Chicago (17th ed.)

New Encyclopaedia Britannica. 15th ed. Chicago: Encyclopaedia Britannica, 1993.

Cita MLA (9th ed.)

New Encyclopaedia Britannica. 15th ed. Encyclopaedia Britannica, 1993.