Van de Walle, John A., author
Erlangga, 2008
Buku Teks
Nurul Fitriana Dewi, author
2017
UI - Skripsi (Membership)
Stephanie Yuanita Indrasari, author
2017
UI - Skripsi (Membership)
Ariyati, author
Universitas Indonesia, 2017
UI - Skripsi (Membership)
Artikel Jurnal