Wilson, J. A. Sam, author
McGraw-Hill, 1977
Buku Teks
Nichols, K.G., author
Crane, Russak, 1982
Buku Teks
Berridge, G. R, author
Palgrave Macmillan, 2015
Buku Teks
Bryar, Rosamund M., author
Palgrave, 1995
Buku Teks
Dale, Ernest, author
McGraw-Hill, 1973
Buku Teks