By Van Hulle Carol A   Corley Robin   Zahn–Waxler Carolyn   Kagan Jerome   Hewitt John K   in Twin Research

ISSN:1369-0523|3|4|259-265

Australian Academic Press‎(2000)‎

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By Burk Linnea   Armstrong Jeffrey   Park Jong-Hyo   Zahn-Waxler Carolyn   Klein Marjorie   Essex Marilyn   in Journal of Abnormal Child Psychology

ISSN:0091-0627|39|2|225-238

Springer Publishing Company ‎(2011)‎

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