Brown, Penelope, author
Cambridge University Press , 1987
Buku Teks
Cambridge University Press, 2008
eBooks
Nurfika Wijayanti, author
Universitas Indonesia, 2010
UI - Tesis (Open)
Chrisna Bhuana Marthinovianto, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2007
UI - Tesis (Membership)
Abdul Muta`ali, author
Idea Press, 2014
UI - Makalah dan Kertas Kerja