Phythian, B. A.
A concise dictionary of English slang / B. A. Phythian
Hodder & Stoughton, 1986
 Buku Referensi
Phythian, B.A.
English grammer/B.A. Phythian, Gordon Humphreys
London Hodder & Stoughton 1992,
 Buku Teks
Makkink, H.J.
An English grammar
Nijgh and Van Ditmar, 1951
 Buku Teks
Newby, Michael
The structure of English : a handbook of English grammar
Cambridge University Press, 1988
 Buku Teks
Azar, Betty Schrampfer, 1941-
Basic english grammar
Prentice Hall Regents, 1995
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