Artikel Jurnal
Artikel Jurnal
Churchill, Winston, Sir, 1874-1965, author
Houghton Miffiln, 1950
Buku Teks
Lenin, Vladimir I., author
Foreign Languages Publishing House, 1959
Buku Teks
edited by Richard H. Egdahl and Diana Chapman Walsh
Springer-Verlag, 1978
Buku Teks