Sanders, T. Irene, author
The Free Press, 1998
Buku Teks
Gharajedaghi, Jamshid, author
Butterworth-Heinemann, 1999
Buku Teks
Stacey, Ralph D., author
Financial Times Prentice Hall, 2011
Buku Teks
Titcomb, T. J., author
[American Society for Training and Development Press, American Society for Training and Development Press], 1998
eBooks
[Fakultas Kedokteran Universitas Indonesia, Fakultas Kedokteran Universitas Indonesia], 2008
Artikel Jurnal