Cita APA (7a ed.)
Communications news. Harcourt Brace Jovanovich Publications.
Cita Chicago Style (17a ed.)
Communications News. Geneva, Ill.: Harcourt Brace Jovanovich Publications.
Cita MLA (9a ed.)
Communications News. Harcourt Brace Jovanovich Publications.
Precaución: Estas citas no son 100% exactas.