Cita APA (7a ed.)

(1963). Gateway to the great books 8: Natural science. Encyclopedia Britannica.

Cita Chicago Style (17a ed.)

Gateway to the Great Books 8: Natural Science. Chicago, Estados Unidos: Encyclopedia Britannica, 1963.

Cita MLA (9a ed.)

Gateway to the Great Books 8: Natural Science. Encyclopedia Britannica, 1963.