Donaldson, B.C.
Martinus Nijhoff, 1983
Buku Teks
Cameron, Deborah
Macmillan, 1992
Buku Teks
Victoria A. Fromkin
Blackwell Publishers, 2001
Buku Teks SO
Lilie Mundalifah Roosman
University of Indonesia, Faculty of Humanities, 2009
Artikel Jurnal
De Beaugrande, Robert
Longman, 1991
Buku Referensi