Lua APA (7ú heag.)
Boehm, J., & Brettel, M. (2008). Entrepreneurial orientation in academia. Gabler.
Lua i Stíl Chicago (17ú heag.)
Boehm, Jan, agus Malte Brettel. Entrepreneurial Orientation in Academia. Wiesbaden: Gabler, 2008.
Lua MLA (9ú heag.)
Boehm, Jan, agus Malte Brettel. Entrepreneurial Orientation in Academia. Gabler, 2008.
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