Berrill, D. P. (1996). Perspectives on written argument. Hampton.
Cita Chicago (17th ed.)Berrill, Deborah P. Perspectives on Written Argument. Cresskill: Hampton, 1996.
Cita MLA (9th ed.)Berrill, Deborah P. Perspectives on Written Argument. Hampton, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.