Jacobsen, G. Political Science A. Jacobsen And M.h. Lipman. Barnes & Nobled.
Lua i Stíl Chicago (17ú heag.)Jacobsen, G.A. Political Science A. Jacobsen And M.h. Lipman. Barnes & Nobled.
Lua MLA (8ú heag.)Jacobsen, G.A. Political Science A. Jacobsen And M.h. Lipman. Barnes & Nobled.
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