ISBN 4822231364 books & textbook
Seizogyo no tame no ekusuperiensu : Kokyaku no kokoro o tsukande ureru monozukuri.
Greg Gianforte; Kazuhiro Ikeda; Mediokuritasu.
Nikkeibipisha : Nikkeibipimaketingu. /2012-05-01 Tankobon Hardcover
isbn-10: 4822231364 / isbn-13: 9784822231361
