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Sage Publications , 2003
Buku Teks
Elliot Aronson...[et al.]
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Buku Teks
Bank, Marcus
Sage Publications, 2001
Buku Teks
Dunn, Dana S.
Wiley-Blackwell, 2009
Buku Teks
Crano, William D.
Lawrence Erlbaum Assossiate, 2002
Buku Teks