Labeda, David P., author
McGraw-Hill , 1990
Buku Teks
Moat, Albert G., author
Wiley-Liss, 1995
Buku Teks
Pandey, S.N., author
Vikas Publishing House PVT, 1997"
Buku Teks
Beck, Raymond W., author
Burgess, 1977, 1977
Buku Teks
edited by P.G. Sammes
Ellis Horwood, 1978
Buku Teks