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Buku Teks
Smart, Huw, author
Oxford University Press, 2006
Buku Referensi
Ian K. Pepper, editor
Learning Matters, 2011
Buku Teks
Runturambi, Arthur Josias Simon, author
2013
Artikel Jurnal
Dodi Abdulrohim, author
Program Pascasarjana Universitas Indonesia, 2011
UI - Tesis Open