Gallagher, Richard S.
Great customer connections: simple psychological techniques that guarantee exceptional service
American Management Association, 2006
 eBooks
Award winning architecture : international yearbook 96
edited by Frantisek Sedlacek and Christine Waiblinger-Jens
Prestel, 1996
 Buku Referensi
Award-winning passive solar house designs
edited by Jeffrey Cook
McGraw-Hill, 1984
 Buku Teks SO
Anderson, Kristin
Great customer service on the telephone
American Management Association, 1992
 eBooks
Baldoni, John, 1952-
Lead by example: 50 ways great leaders inspire results
American Management Association;, 2009
 eBooks