Heaton, J.B.
Longman dictionary of common errors
Longman, 1987
Buku Referensi
Behrman, Carol H.
Writing Skills Problems solver : 101 ready-to-use writing process activities for correcting the most common errors
Applied Research in Education, 2000
Buku Teks
Schram, Martin
Avoiding armageddon
Basic Books, 2003
Buku Teks
The Efficacy and safety of oral cefixime in the treatment of common pediatric respiratory tract infections C.Y. Lee (et.al)
Artikel Jurnal
The Efficacy and safety of ceficime in the tratment of common pediatric repiratory tract infection Teerachai Chantarojanasiri
Artikel Jurnal