Mays, Larry W.
McGraw-Hill, 1992
Buku Teks
Marco Bernardo, editor
[, Springer-Verlag], 2012
eBooks
Michielsen, Bastiaan, editor
[Springer-Verlag, ], 2012
eBooks
Anders Rasmuson, Bengt Andersson, Louise Olsson, Ronnie Andersson,
Cambridge University Press , 2014
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Faber, Michael Havbro, author
[, Springer], 2012
eBooks