Lua APA (7ú heag.)
Marburger, D. R. (2016). How strong is your firm's competitive advantage? (Second edition.). Business Expert Press.
Lua i Stíl Chicago (17ú heag.)
Marburger, Daniel R. How Strong Is Your Firm's Competitive Advantage? Second edition. New York, New York (222 East 46th Street, New York, NY 10017): Business Expert Press, 2016.
Lua MLA (9ú heag.)
Marburger, Daniel R. How Strong Is Your Firm's Competitive Advantage? Second edition. Business Expert Press, 2016.
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