M.A. Yunita Triwardani Winarto
Agrometeorological learning: coping better with climate change
LAP Lambert Academic Publishing, 2011
 Buku Teks
Gordon, Adam, 1964-
Future savvy: identifying trends to make better decisions, manage uncertainty, and profit from change
American Management Association, 2008
 eBooks
Wilson, George P.
A guide to better english
F.S. Crofts, 1947
 Buku Teks
How to write and speak better
Reader's Digest Service, 1987
 Buku Teks
Estep, Tora
Be a better manager: management development
American Society for Training & Development, 2006
 eBooks