Verhaeghen, Paul, author
Oxford University Press, 2017
eBooks
Post, Karen, author
[American Management Association, ], 2004
eBooks
Amen, Daniel G., author
Qanita, 2012
Buku Teks
Buzan, Tony, author
Penguin Books, 1991
Buku Teks
Amen, Daniel G.
Qanita, 1998
Buku Teks