Koneru, Aruna
English language skills
Tata McGraw-Hill, 2011
Buku Teks SO
Chandrasegaran, Antonia
Crossover : a course for developing reading and writing skills
McGraw-Hill, 1995
Buku Teks SO
Camp, Sue C.
Developing proofreading and editing skills
McGraw-Hill, 2001
Multimedia
Langan, John, 1942-
College writing skills and college writing skills with readings
MCGraw-Hill, 2001
Multimedia
Evans, Desmond W.
Improving english skills
Pitman, 1989
Buku Teks SO