O'SHAUGHNESSY DOUGLAS. (2010). SPEECH COMMUNICATIONS (2nd.). TTI, BERHANPUR,WEST BENGAL.
Cita Chicago (17th ed.)O'SHAUGHNESSY DOUGLAS. SPEECH COMMUNICATIONS. 2nd. TTI, BERHANPUR,WEST BENGAL, 2010.
Cita MLA (9th ed.)O'SHAUGHNESSY DOUGLAS. SPEECH COMMUNICATIONS. 2nd. TTI, BERHANPUR,WEST BENGAL, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.