Frista Caesar Rifa, author
2017
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Lewis, Richard D., author
Remaja Rosdakarya, 2004
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Muhamat Riando, author
[, ], 2014
UI - Makalah dan Kertas Kerja
Elashmawi, Farid, author
Gramedia Pustaka Utama, 1996
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edited by Barbara P. Uzzell, Marcel O. Ponton, Alfredo Ardila
Lawrence Erlbaum Associates, 2007
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