Benton, Peter
Hodder and Stoughton Educational, 1994
Buku Teks
Liswood, Laura A.
Pandora, 1995
Buku Referensi
Patterson, James
Little, Brown and Company, 2024
Buku Teks
Hoskins, Janet
Routledge, 1998
Buku Teks SO
Instituto Poligrafico dello Stato, 1974
Buku Teks