APA aipamena

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 Style aipamena

Booher Dianna. The Voice of Authority: 10 Communication Strategies Every Leader Needs to Know. In lần thứ 1. U.S.A: McGraw -Hill, 2007.

MLA aipamena

Booher Dianna. The Voice of Authority: 10 Communication Strategies Every Leader Needs to Know. In lần thứ 1. U.S.A: McGraw -Hill, 2007.