Grossberg, George T.
Jones and Bartletts, 2011
Buku Teks
Ajeng Ayu Arainikasih
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2014
UI - Laporan Penelitian
Parkin, Alan C.
John Wiley & Sons, 1999
Buku Teks SO
Baddeley, Alan
Lawrence Erlbaum Associates, 1990
Buku Teks SO
Haberlandt, Karl
Allyn and Bacon, 1999
Buku Teks SO