Riordan, Rick, author
Mizan Publika, 2016
Buku Teks
Shelley, Percy Bysshe, author
Sampson, 1852
Buku Teks
Walker, E. A.
The University Press, 1945
Buku Teks
Walker, Shirley
Oxford University Press, 1982
Buku Referensi
Walker, David, author
Nelson, 1992
Buku Teks