Sharp, John, author
Microsoft Press, 2008
Buku Teks
Balliauw, Maarten, author
Springer, 2012
eBooks
Kiessig, Richard, author
Springer, 2012
eBooks
Instructional Software Research, Development (ISRD) Group
Tata McGraw-Hill, 2011
Buku Teks
Graham, Ian S.
John Wiley & Sons, 1995
Buku Referensi