Poltorak, A., & Lerner, P. (2002). Essentials of intellectual property. Wiley.
Lua i Stíl Chicago (17ú heag.)Poltorak, Alexander, agus Paul Lerner. Essentials of Intellectual Property. New York ; [Great Britain]: Wiley, 2002.
Lua MLA (8ú heag.)Poltorak, Alexander, agus Paul Lerner. Essentials of Intellectual Property. Wiley, 2002.
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