Lua APA (7ú heag.)

Earl, P., & Wakeley, T. (2005). Business economics: A contemporary approach. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Earl, Peter, agus Tim Wakeley. Business Economics: A Contemporary Approach. London: McGraw-Hill, 2005.

Lua MLA (8ú heag.)

Earl, Peter, agus Tim Wakeley. Business Economics: A Contemporary Approach. McGraw-Hill, 2005.

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