Blackman, Tim, author
Routledge, 1995
Buku Teks
edited by C.A. O'Flaherty
Edward Arnold, 1997
Buku Teks
White, Peter R.
Hutchinson, 1976
Buku Teks
Gilg, Andrew
Routledge, 1996
Buku Teks
Genevieve Giuliano, Susan Hanson, editors
Guilford Press, 2017
Buku Teks