edited by Charles R. Dechert
A. Clarion book, 1966
Buku Teks
Ashby, W. Ross, author
Chapman and Hall , 1973
Buku Teks
Bell, D.A., author
Blaisdell Publ. Comp., 1964
Buku Teks
Sommer, Bobbe
Prentice-Hall, 1993
Buku Teks
Beer, Stafford
English University Press, 1973
Buku Teks