Hergenhahn, B.R., 1934-, author
Prentice-Hall, 1997
Buku Teks
Elliott, Stephen N.
McGraw-Hill, 2000
Multimedia
Castle, Paul, author
SAGE, 2018
Buku Teks
editor, Dirk Ifenthaler, Deniz Eseryel, Xun Ge
Springer, 2012
eBooks
Eva Hjorne
Sense, 2012
eBooks