Mader, Sylvia S.
Inquiry into life
W.C. Brown , 1988
 Buku Teks
Mader, Sylvia S.
Inquiry into life
McGraw-Hill, Higher Education, 2006
 Buku Teks
Weinberg, Stanley L.
Bilogy an inquiry into the nature of life
Allyn and Bacon, 1974
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Emotional intelligence in everyday life : a scientific inquiry
Joseph Ciarrochi, Joseph P. Forgas, John D. Mayer.
Psychology Press, 2001
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Woodby, Sylvia
The Changing agenda / Sylvia Woodby
Westview Press, 1988
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