SANTROCK, J. W. (2011). Life Span Development Edisi 13 Jilid 2. Erlangga.
Lua i Stíl Chicago (17ú heag.)SANTROCK, John W. Life Span Development Edisi 13 Jilid 2. Erlangga, 2011.
Lua MLA (8ú heag.)SANTROCK, John W. Life Span Development Edisi 13 Jilid 2. Erlangga, 2011.
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