Iversen, Carl
Levin & Munksgaard, 1936
Buku Teks
Iwan Jaya Azis, 1953-, author
Cornell University, 1983
Buku Teks
Wilkes, F. M.
John Wiley & Sons, 1977
Buku Teks
Bierman, Harold, author
Macmillan, 1960
Buku Teks
Cambridge University Press, 2007
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