Wheeler, Geoffrey
Oxford University Press, 1962
Buku Teks
Wheeler, Geoffrey
Bodley Head, 1966
Buku Teks
[publisher not identified], 1967
Buku Teks
Makarenko, A.S., author
Progress Publishers, 1965
Buku Teks
edited by Donald S. Zagoria
Yale University Press, 1982
Buku Teks