Pocock, Douglas
Macmillan, 1978
Buku Teks
Mercer, Charles, author
Penguin Books, 1975
Buku Teks
Michelson, William, author
Addison-Wesley, 1970
Buku Teks
Tonkiss, Fran, author
Polity Press, 2013
Buku Teks
Hadi Sabari Yunus, author
Pustaka Pelajar, 2008
Buku Teks