Puri, Madan Lal
John Wiley & Sons, 1971
Buku Teks
Schafer, J.L., author
Chapman & Hall, 1997
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Hardle, Wolfgang Karl, author
Springer , 2012
eBooks
Myers, Wayne L., author
Springer, 2012
eBooks
Joseph F. Hair Jr., author; William C. Black, author; Barry J. Babin, author; Rolph E. Anderson, author
Pearson, 2014
Buku Teks