editor, Angel Aparicio
University of Santo Tomas, 2005
Buku Referensi
University Santo Tomas, 2008
Majalah, Jurnal, Buletin
Chandler, Stephanie
John Wiley & Sons, Inc, 2007
Buku Teks
Brenner, Gary, author
Prentice-Hall, 1990
Buku Referensi
Goris Mustaqim, author
Dompet Dhuafa, 2013
Buku Teks