Islam, Iyanatul
Routledge, 1996
Buku Teks SO
edited by Richard Maidment and Colin Mackerras
Routledge, 1998
Buku Teks SO
Education Research Institute Seoul National University, 2005
Majalah, Jurnal, Buletin
De La Saller University, 2005
Majalah, Jurnal, Buletin
Rohan Gunaratna, Stefanie Kam.
Imperial College Press, 2016
Buku Teks