Marx, Karl, 1818-1883, author
Foreign Languages , 1959
Buku Klasik
Balaam, David N., 1950-, author
Pearson Education, 2014
Buku Teks
edited by John Ravenhil
Oxford University Press, 2014
Buku Teks
edited by John Ravenhill
NY Oxford University Press, 2017
Buku Teks
Oatley, Thomas, author
Pearson, 2012
Buku Teks