STAID, BBPT, 1993
Buku Referensi
Jorg Mahlich, Werner Pascha, editors
[Springer-Verlag, ], 2012
eBooks
Thammasat University,
Majalah, Jurnal, Buletin
J.P. Singh, Madeline Carr and Renée Marlin-Bennett, editors
Routledge, Taylor & Francis Group, 2019
Buku Teks
J.P. singh, Madeline Carr, Renee Marlin-Bennett, editor
Routledge, 2019
Buku Teks