Travers, R., & Welsh, J. (2011). Confronting crisis.
Cita Chicago (17th ed.)Travers, R., i J. Welsh. Confronting Crisis. 2011.
Cita MLA (9th ed.)Travers, R., i J. Welsh. Confronting Crisis. 2011.
Atenció: Aquestes cites poden no estar 100% correctes.