Talk to me in Korean. Level 9, Get one step closer to speaking like a native through idiomatic phrases and more advanced grammar points written by TalkToMeInKorean ; edited by Kyung-hwa Sun, Stephanie Bates.
"The Talk to me in Korean curriculum consists of 10 books (Level 1 through Level 10)" --Inside front cover.
"This book is based on a series of published lessons, divided into ten levels, which are currently available at TalkToMeInKorean.com" --Page facing title page.