The Builder Group, {s.a}
Majalah, Jurnal, Buletin
Headley Brothers Ltd, Kent, UK,
Majalah, Jurnal, Buletin
Pergamon Press,
Majalah, Jurnal, Buletin
Bracket, Michelle, author
Ruckus Books, 2014
Buku Referensi
Sanchez, Betshy Paola, author
Ruckus Books, 2014
Buku Referensi