Lua APA (7ú heag.)

(1997). The Business Environment: Challenges And Changes / Ian Brooks. Prentice-Hall.

Lua i Stíl Chicago (17ú heag.)

The Business Environment: Challenges And Changes / Ian Brooks. Prentice-Hall, 1997.

Lua MLA (8ú heag.)

The Business Environment: Challenges And Changes / Ian Brooks. Prentice-Hall, 1997.

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