Howe, Geoffrey L. (Geoffrey Leslie), author
Wright , 1990
Buku Teks
Clancy, Tom
Penguin Book,, 2004
Buku Teks
by Aleksey Maksimovich Gor`kiy; translated by Margaret Wettlin
Foreign Languages Publishing House, [date of publication not identified]
Buku Teks
Becker, Adrian, author
Wiley-Blackwell, 2012
Buku Teks
Singh, Karanprakash, author
Lambert Academic Publishing , 2011
Buku Teks