Val, L. (1994). Electronic Media Ethics Val Limburg. Butterworth-Heinemann.
Chicago Style (17th ed.) CitationVal, Limburg. Electronic Media Ethics Val Limburg. Butterworth-Heinemann, 1994.
Cita MLAVal, Limburg. Electronic Media Ethics Val Limburg. Butterworth-Heinemann, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.