English corpus linguistics : an itroduction / Charles F. Mayer
Cambridge University Press, 2002
 eBooks
A.G. Gianto
Konjungsi dan atau tetapi : kajian sintaksis dan semantis / A.G. Gianto
Yayasan Kanisius, 1983
 Buku Teks SO
Introducing English linguistics / Charles F. Meyer.
Cambridge University Press, 2009
 eBooks
Longman dictionary of contemporary English
Longman, 1989
 Buku Referensi
Contemporary english : explorations
by Barbara Pannwitt ... [and others]
Silver Burdett, 1976
 Buku Teks SO