Taylor, Sandie
Routledge, 2019
Buku Teks SO
BPS Blackwell, 2012
Buku Teks SO
edited by Grover Maurice Godwin
CRC Press, 2001
Buku Teks
Wrightsman, Lawrence S.
Wadsworth/Thomson Learning, 2001
Buku Teks SO
edited by Elena L. Grigorenko
Springer, 2012
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