Seung, Eun-oh, author
Darakwon, 2006
Buku Teks
Willard, Wendy, author
Osborne/McGraw-Hill, 2001
Buku Referensi
Brunner, Laurel, author
Mizan, 1999
Buku Teks
Soyinka, Wale, author
McGraw-Hill, 2012
Buku Teks
Wong, Caroline, author
McGraw-Hill , 2012
Buku Teks