Jurnal Psikologi perkembangan

http://www.4shared.com/document/gJyY9YoL/PROFESSORS_USE_OF_CASE_DISCUSS.html
http://www.4shared.com/document/oJ-uByN8/FACTORS_INFLUENCING_STUDENT_PE.html
http://www.4shared.com/document/b2g8EorD/DIFFERENTIAL_EFFECTS_OF_STUDEN.html
http://www.4shared.com/document/DZDtlaN4/AN_EXPLORATORY_STUDY_OF_THE_EF.html

silahkan copy paste link yang ada di atas