Saunders, M. L. (2011). Research Methods for Business Students (5th.). Pearson.
Lua i Stíl Chicago (17ú heag.)Saunders, Mark; Lewis. Research Methods for Business Students. 5th. New Delhi: Pearson, 2011.
Lua MLA (9ú heag.)Saunders, Mark; Lewis. Research Methods for Business Students. 5th. Pearson, 2011.
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