Universiti Teknologi Malaysia, 2008
Buku Referensi
Jurnal Teknologi, Vol. 15 (3) September 2001 : 317-322, 2001
Artikel Jurnal
Springer Singapore, 2019
eBooks
Universitat Autonoma de Barcelona , 1987
Buku Teks
edited by Wolfgang U. Dressler [and others]
Cambridge University Press, 1992
Buku Teks