STEINER GEORGE A. (1982). MANAGEMENT POLICY & STRATEGY: TEST, READINGS & CASES (2ND.). MACMILLAN.
Lua i Stíl Chicago (17ú heag.)STEINER GEORGE A. MANAGEMENT POLICY & STRATEGY: TEST, READINGS & CASES. 2ND. NEW YORK: MACMILLAN, 1982.
Lua MLA (9ú heag.)STEINER GEORGE A. MANAGEMENT POLICY & STRATEGY: TEST, READINGS & CASES. 2ND. MACMILLAN, 1982.
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