Slobodkin, Louis, 1903-1975.
Macmillan, 1962
Buku Teks
Baker, Ann, author
Cambridge University Press, 1982
Buku Teks
Eyres, David J., author
Butterworth-Heinemann, 2001
Buku Teks
Eyres, David John, author
Butterworth-Heinemann, 2012
Buku Teks
Eyres, David John, author
Butterworth-Heinemann, 2001
Buku Teks