Killian, R. A. (1966). Managers must lead!: A supervisor's roadmap to advancement. American Management Association.
Lua i Stíl Chicago (17ú heag.)Killian, Ray A. Managers Must Lead!: A Supervisor's Roadmap to Advancement. [New York]: American Management Association, 1966.
Lua MLA (9ú heag.)Killian, Ray A. Managers Must Lead!: A Supervisor's Roadmap to Advancement. American Management Association, 1966.
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