Cita APA (7a ed.)

(1975). The new encylopedia britannica in 30 Volumes. Encyclopedia britannica, Inc.

Cita Chicago Style (17a ed.)

The New Encylopedia Britannica in 30 Volumes. London: Encyclopedia britannica, Inc, 1975.

Cita MLA (9a ed.)

The New Encylopedia Britannica in 30 Volumes. Encyclopedia britannica, Inc, 1975.