Harris, Donald, author
Weidenfeld and Nicolson, 1988
Buku Teks
by Barbara Allen Babcock [and others]
Little, Brown, 1975
Buku Teks
Goldrein, Lain S., author
Sweet & Maxwell, 2011
Buku Teks
Griggs, Barbara, author
Pan Books, 1995
Buku Referensi
Sambidge, Gordon, author
Piccadilly Press Ltd., 1992
Buku Referensi