Kennedy, X.J.
HarperCollins, 1991
Buku Teks SO
Kennedy, X.J.
HarperCollins, 1991
Buku Referensi
edited by Sylvan Barnet, Morton Berman, William Burto
Harper Collin College, 1992
Buku Teks
edited by Sylvan Barnet ... [et al.]
Longman, 2003
Buku Teks SO
Kennedy, X.J.
Pearson, 2016
Buku Teks SO