edited by Hilary Dyer and Gwyneth Tseng
Taylor Graham, 1988
Buku Teks
edited by Susan Hornby, Zoe Clarke
Facet, 2004
Buku Teks
Barnes, Harry Elmer, author
Prentice Hall of India, 1966
Buku Teks
Zeng, Fan-Gang, editor
Springer, 2011
eBooks
edited by Gerald W. Whitted
Pan American World Airways, 1971
Buku Referensi