Mamlouk, Michael S.
Pearson Prentice Hall, 2006
Buku Teks
Van Vlack, Lawrence H.
Addison-Wesley, 1970
Buku Teks
Doyle, Lawrence E.
Prentice-Hall, 1961
Buku Teks
Shackelford, James F.
Macmillan Press, 1990
Buku Teks
Meier, Michael L.
Pearson Education, 2005
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