Christian, John, author
John Wiley & Sons, 1981
Buku Teks
Twort, A. C., author
Arnold, 1995
Buku Teks
edited by Michel Fremond and Franco Maceri
Springer, 2012
eBooks
Fenves, Steven J., author
Prentice-Hall, 1969
Buku Teks
Urquhart, Leonard Church, editor
McGraw-Hill , 1950
Buku Teks