Booher Dianna. (2007). The Voice of Authority: 10 Communication Strategies Every Leader Needs to Know (In lần thứ 1.). U.S.A: McGraw -Hill.
Chicago-stil citatBooher Dianna. The Voice of Authority: 10 Communication Strategies Every Leader Needs to Know. In lần thứ 1. U.S.A: McGraw -Hill, 2007.
MLA-referensBooher Dianna. The Voice of Authority: 10 Communication Strategies Every Leader Needs to Know. In lần thứ 1. U.S.A: McGraw -Hill, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.