Bishop, Errett
Springer-Verlag , 1985
Buku Teks SO
Rao, M.M.
Academic Press, 1981
Buku Teks SO
Budevsky, O.
Ellis Horwood, 1979
Buku Teks SO
editors, Richard C. Smardon, James F. Palmer, John P. Felleman
John Wiley & Sons, 1986
Buku Teks SO
Ponnusamy, S.
Springer, 2012
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