Michael Kalvius, Paul Kienle
Springer, 2012
eBooks
Elsevier, 2013
eBooks
Taylor, A.E. (Alfred Edward), 1869-1945
University Paperbacks, 1960
Buku Teks
Moscow Foreign Languages Publishing House 1959
Buku Teks
Makarenko, A.S.
Foreign Languages Publishing House, 1920
Buku Teks