Grant, Patricia
Prentice-Hall, 1989
Buku Referensi
Beckett, Grace
Russell & Russell, 1972
Buku Teks
Davie, Grace, author
SAGE, 2013
Buku Teks
Williams, Joseph M.
The University of Chicago Press, 1990
Buku Teks
Parsons, Patricia J., author
Erlangga, 2004
Buku Teks