Hogrefe & Huber, 1990
Buku Teks
Lawrence Erlbaum Associates , 1991
Buku Teks
edited by J. Richard Jennings, Michael G.H. Coles
John Wiley & Sons, 1991
Buku Referensi
Bloom, Floyd E.
W.H. Freeman & Co. , 1988
Buku Teks
Knoblauch, Kenneth, author
[Springer, ], 2012
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