Gaya APA

Tekin, A., Williams, P, A. (2011). New security challenges: geo-politics of the Euro-Asia energy nexus . : Palgrave macmillan.

Gaya MLA

Tekin, Ali., Williams, Paul, Andrew. "New security challenges: geo-politics of the Euro-Asia energy nexus". : Palgrave macmillan, 2011. Buku Cetak.