APA
Barrett D., . (2011). Leadership communication. New York: McGraw-Hill Irwin.
Chicago
Barrett Deborah, . 2011. Leadership communication. New York: McGraw-Hill Irwin.
Harvard
Barrett D., . (2011). Leadership communication. New York: McGraw-Hill Irwin.
MLA
Barrett Deborah, . Leadership communication. New York: McGraw-Hill Irwin. 2011.