Cita APA (7a ed.)

STEWART, P. (1964). Sound and light unit. Encyclopa-edia Britanica Press.

Cita Chicago Style (17a ed.)

STEWART, P.E. Sound and Light Unit. Chicago: Encyclopa-edia Britanica Press, 1964.

Cita MLA (9a ed.)

STEWART, P.E. Sound and Light Unit. Encyclopa-edia Britanica Press, 1964.