APA

Acker D. D., Defense Systems Management College, . (1992). Skill in communication: a vital element in effective management. Fort Belvoir, Va: Defense Management Systems College.

Chicago

Acker David D, Defense Systems Management College, . 1992. Skill in communication: a vital element in effective management. Fort Belvoir, Va: Defense Management Systems College.

Harvard

Acker D. D., Defense Systems Management College, . (1992). Skill in communication: a vital element in effective management. Fort Belvoir, Va: Defense Management Systems College.

MLA

Acker David D, Defense Systems Management College, . Skill in communication: a vital element in effective management. Fort Belvoir, Va: Defense Management Systems College. 1992.