Van Boeckel, Joseph J.G.M., author
Helder, [Date of publication not identified]
Buku Teks
Telford, W.M., author
Cambridge University Press, 1990
Buku Teks
Parasnis, D.S., author
Chapman and Hall, 1997
Buku Teks
Parasnis, D.S., author
Elsevier , 1973
Buku Teks
Telford, W.M., author
Cambridge University Press, 1990
Buku Teks