Cavanaugh, Francis X.
The truth about the national debt: Five mayths and one reality/Francis X. Cavanaugh
Boston Harvard business school press 1996,
 Buku Teks
Phillips, Jack J.
Measuring for success: what CEOs really think about learning investments
American Society for Training & Development, 2009
 eBooks
McCormack, Mark H.
The Terrible truth about lawyers : how lawyers really work and how to deal with them successfully
Beech Tree Books, 1987
 Buku Teks
DeYoung, Kevin
Crazy buzy: super sibuk = Crazy busy: a (mercifully) short book about a (really) big problem
Literature Perkantas Jatim, 2015
 Buku Teks
Roemer, Milton I.
National health systems of the world : volume one, the countries
Oxford University Press, 1991
 Buku Referensi