Lua APA (7ú heag.)

Palmer, A. (2009). The Business environment sixth edition. McGraw-Hill Higher Education.

Lua i Stíl Chicago (17ú heag.)

Palmer, Adrian. The Business Environment Sixth Edition. McGraw-Hill Higher Education, 2009.

Lua MLA (8ú heag.)

Palmer, Adrian. The Business Environment Sixth Edition. McGraw-Hill Higher Education, 2009.

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