Philippines : De La Salle Univesrsity-Manila, 2005,
Majalah, Jurnal, Buletin
Cambridge University Press, 2012
Majalah, Jurnal, Buletin
Kwansei Gakuin University,
Majalah, Jurnal, Buletin
Artikel Jurnal
Office of Research and Publications Loyola Schools,
Majalah, Jurnal, Buletin