edited by Lee Bosher
Taylor & Francis Group, 2008
Buku Teks
Hole, Graham
Lawrence Erlbaum, 2007
Buku Teks
Hall, Robert W.
Dow Jone-Irwin , 1987
Buku Teks
Taylor, Lawrence E.
Little, Brown, 1981
Buku Teks
Tysor, H. James
Dallas: Banks Upshaw, 1953
Buku Teks