Cita APA (7a ed.)

(1958). The encyclopedia Americana: The international reference work : complete in thirty volumes. Americana Corporation.

Cita Chicago Style (17a ed.)

The Encyclopedia Americana: The International Reference Work : Complete in Thirty Volumes. New York, [etc]: Americana Corporation, 1958.

Cita MLA (9a ed.)

The Encyclopedia Americana: The International Reference Work : Complete in Thirty Volumes. Americana Corporation, 1958.