Ag. Bambang Setiyadi
Teaching language skills : preparing materials and selecting techniques
Graha Ilmu, 2018
 Buku Teks
Writing Prose : techniques and purposes
Oxford University Press , 1976
 Koleksi Publik
Describing the foreign language skills of catalogers in academic libraries Jefrey Beall
 Artikel Jurnal
Douglas, Dan
Assessing language for specific purposes
Cambridge University Press, 2000
 Buku Teks
Research perspectives on english for academic purposes
John Flowerdew, Matthew Peacock
Cambridge University Press, 2001
 Buku Teks