Devito, Joseph A.
Random House, 1970
Buku Teks
O`Shaughnessy, Douglas, 1950-
Addison-Wesley, 1987
Buku Teks
Gillam, ronald B.
Jones and Bartlett Learning, 2011
Buku Teks
Field, John
Routledge, 2005
Buku Teks
edited by Michael Tomasello
Lawrence Erlbaum Associates, 2003
Buku Teks