Thiel, Peter A., author
Virgin Books, 2014
Buku Teks
Chant, Bent, author
Avon Books, 1994
Buku Teks
Bradberry, John, 1961-, author
American Management Association, 2011
eBooks
Thiel, Peter A., author
Virgin Books, 2015
Buku Teks
Rosa Diniari, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2012
Buku Teks