Cita APA (7th ed.)

Britannica Corporation. (1990). Biology [videorecording]: Protist: form, function and ecology bacteria. Encyclopedia Britannica Educational Corporation.

Cita Chicago (17th ed.)

Britannica Corporation. Biology [videorecording]: Protist: Form, Function and Ecology Bacteria. Chicago: Encyclopedia Britannica Educational Corporation, 1990.

Cita MLA (9th ed.)

Britannica Corporation. Biology [videorecording]: Protist: Form, Function and Ecology Bacteria. Encyclopedia Britannica Educational Corporation, 1990.