Greta Thornbory and Susanna Everton, editors
Routledge, 2018
Buku Teks
Bailliere Tindall , 2001
Buku Teks
Howlin, Patricia, author
John Wiley & Sons, 1998
Buku Teks
Kumar, Somesh, author
Intermediate Technology, 2002
Buku Teks
Thornton, George C
Lawrence Erlbaum Associates, 2004
Buku Teks