Worthington, I., & Britton, C. T. (2018). The business environment a global perspective (8th.). Pearson Education Limited, Harlow.
Lua i Stíl Chicago (17ú heag.)Worthington, Ian, agus Chris Thompson Britton. The Business Environment a Global Perspective. 8th. United Kingdom: Pearson Education Limited, Harlow, 2018.
Lua MLA (9ú heag.)Worthington, Ian, agus Chris Thompson Britton. The Business Environment a Global Perspective. 8th. Pearson Education Limited, Harlow, 2018.
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