Luker, Leslie G., author
Adana, 1973
Buku Teks
Hirooka, Kyushi, author
PT Elex Media Komputindo, 2019
Buku Teks
Wong, Caroline, author
McGraw-Hill , 2012
Buku Teks
Soyinka, Wale, author
McGraw-Hill, 2012
Buku Teks
Willard, Wendy, author
Osborne/McGraw-Hill, 2001
Buku Referensi