Christian, John, author
John Wiley & Sons, 1981
Buku Teks
edited by Michel Fremond and Franco Maceri
Springer, 2012
eBooks
Twort, A. C., author
Arnold, 1995
Buku Teks
Fenves, Steven J., author
Prentice-Hall, 1969
Buku Teks
editor-in-chief, Leonard Church Urquhart
McGraw-Hill, 1959
Buku Referensi