Oshima, Alice, author
Pearson Longman, 2006
Buku Teks
Jordan, R. R., author
Longman, 2001
Buku Teks SO
Oshima, Alice, author
Longman, 1997
Buku Teks
Swales, John M.
The University of Michigan Press, 1994
Buku Teks
editors, Junaidi, Elda N. Auliansani, Farah S. Azizah, M. Umar Sadikin
UI Publishing, 2020
Buku Teks