Gordon, Charles K., author
Dickenson, 1967
Buku Teks
Chartrand, Gary, author
McGraw-Hill, 2005
Buku Teks
Nora Hartsfield
Academic Press , 1990
Buku Teks
Reza, Fazlollah M., author
Dover pub., 1994
Buku Teks
Roussas, George G., author
Academic Press, 2014
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