Truett, L. (2004). Managerial economics: Analysis ,problems ,cases (8th.). John Wiley.
Lua i Stíl Chicago (17ú heag.)Truett, Lila. Managerial Economics: Analysis ,problems ,cases. 8th. Singapore: John Wiley, 2004.
Lua MLA (9ú heag.)Truett, Lila. Managerial Economics: Analysis ,problems ,cases. 8th. John Wiley, 2004.
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