KRANZ GARRY. (2007). BEST PRACTICES: COMMUNICATING EFFECTIVELY. HARPER COLLINS PUBLISHERS.
Cita Chicago (17th ed.)KRANZ GARRY. BEST PRACTICES: COMMUNICATING EFFECTIVELY. NEW YORK: HARPER COLLINS PUBLISHERS, 2007.
Cita MLA (9th ed.)KRANZ GARRY. BEST PRACTICES: COMMUNICATING EFFECTIVELY. HARPER COLLINS PUBLISHERS, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.