edited by Marina v.N. Whitman ... [and others]
Council on Foreign Relations, 1984
Buku Teks
Fishman, Betty G.
Thomas Y. Crowell, 1969
Buku Teks
Sherman, Howard J.
Appleton-Century-Crofts, 1964
Buku Teks
Ochel, Wolfgang
Pinter, 1987
Buku Teks
Boak, Arthur E.R.
Appleton-Century-Crofts, 1951
Buku Teks SO