A book explaining the theory and practice of MBTI. - Title: An Introduction to MBTI - Authors: R.R. Pearman & S.C. Albritton - Translator: Yuki Sekita - Year of Publication: 2012 - ISBN: 978-4-905050-21-6 Essential MBTI Year of Publication: 2014 Thank you for viewing. Purchased on Amazon in January 2017. Selling at a low price because I haven't had a chance to read them. Two books. These are old books, so they are being sold as-is. There may be some page wear, so please purchase if you can accept this. The Essential MBTI book is in particularly poor condition and will be included as a bonus. MBTI has become popular recently, but this is a true MBTI guidebook. How about it if you want to study it? Thank you. I am open to price negotiations. #mbti #MBTI #jpp #YukiSonoda #istp #enfj #infp #Jung