Holschuh, Louis W.
The functions of the English grammer/Louis W. Holscchuh
New York St. Martin's Press 1991,
Buku Teks
Hughes, John
Times tenses and conditions/John Hughes and Tom McArthur
London Collins 1994,
Buku Teks
English grammatical structure : a general syllabus for teachers / L.G. Alexander...[et al.]
Longman Group UK Limited , 1975
Buku Teks SO
Lasnik, Howard
A Course in minimalist syntax : foundations and prospects
Blacwell , 2005
Buku Teks
Honnor, Sylvia
Tricolore: pupil's book/Sylvia Honnor, Ron Holt, Heather Mascie-Taylor
Leeds E.J. Arnold 1985,
Buku Teks