Wetherly, P., & Otter, D. (2008). The business environment: Themes and issues (2nd ed.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Wetherly, Paul, agus Dorron Otter. The Business Environment: Themes and Issues. 2nd ed. Oxford ; New Delhi: Oxford University Press, 2008.
Lua MLA (8ú heag.)Wetherly, Paul, agus Dorron Otter. The Business Environment: Themes and Issues. 2nd ed. Oxford University Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.