Queensland University of Technology, 1998
Buku Referensi
Bolander, Donald O.
Career Publishing, 1992
Buku Referensi
edited by Fergus L.M. Craik, Timothy A. Salthouse
Lawrence Erlbaum, 1992
Buku Teks
edited by Leo M.L. Nollet, Fidel Toldra
CRC Pres, 2009
Buku Referensi
Marius, Richard
McGraw-Hill, 1988
Buku Teks