Aycock, C., & Brent, R. (2011). Progressive messages: Tracking message progress through events.
Cita Chicago (17th ed.)Aycock, CC, i RP Brent. Progressive Messages: Tracking Message Progress Through Events. 2011.
Cita MLA (9th ed.)Aycock, CC, i RP Brent. Progressive Messages: Tracking Message Progress Through Events. 2011.
Atenció: Aquestes cites poden no estar 100% correctes.