Val, L. (1994). Electronic Media Ethics Val Limburg. Butterworth-Heinemann.
Cita Chicago Style (17a ed.)Val, Limburg. Electronic Media Ethics Val Limburg. Butterworth-Heinemann, 1994.
Cita MLA (8a ed.)Val, Limburg. Electronic Media Ethics Val Limburg. Butterworth-Heinemann, 1994.
Precaución: Estas citas no son 100% exactas.