edited by Andrew Rothstein and Clemens Dutt
Foreign Languages Pub. House, 1960
Buku Teks
Carr, Edward Hallet, author
Macmillan, 1954
Buku Teks
Eklof, Ben, author
Westview Press, 1989
Buku Teks
Macmillan, 1989
Buku Teks
Rand, Robert, author
Westview Press, 1991
Buku Teks