Zhdanov, V., author
Foreign Languages Publishing House, [date of publication not identified]
Buku Teks
Christie, David
UNSW Press, 1997
Buku Teks
Rogers Detels ... [et al.], editor
Oxford University Press, 2011
Buku Teks
Weiss, Noel S.
Oxford University Press, 1986
Buku Teks
Fletcher, Robert H., author
Gadjah Mada University Press, 1992
Buku Teks