Cita APA (7th ed.)

(1980). The New Encyclopaedia Britannica: Propaedia : outline of knowledge : guide to the Britannica (Fifteenth edition.). Encyclopaedia Britannica.

Cita Chicago (17th ed.)

The New Encyclopaedia Britannica: Propaedia : Outline of Knowledge : Guide to the Britannica. Fifteenth edition. Chicago: Encyclopaedia Britannica, 1980.

Cita MLA (8th ed.)

The New Encyclopaedia Britannica: Propaedia : Outline of Knowledge : Guide to the Britannica. Fifteenth edition. Encyclopaedia Britannica, 1980.