Rowley, Jennifer, author
Clive Bingley , 1980
Buku Teks
Macek, Rosanne M.
Meckler Corporation, 1988
Buku Referensi
Fensterer, Richard
Meckler, 1988
Buku Referensi
Dewey, Patrick R.
Meckler Corporation, 1987
Buku Referensi
edited by Margaret Brittin
Routledge , 1992
Buku Teks