Randel, Jim
Facts on File Publications, 1986
Buku Teks
Johnston, S. A.
Wiley, 2003
Buku Teks
Chandra, Prasanna
Tata McGraw-Hill , 1994
Buku Teks
Ellis, Charles D.
Irwin Professional Publishing , 1993
Buku Teks
edited by Gregoire Montavon, Genevieve B. Orr, Klaus-Robert Muller
Springer-Verlag, 2012
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