リファレンスブックでしょう
rifarensubukkudeshō
1. Reference book, probably.; It's likely a reference book.
Noun
#2921879
1. Reference book, probably.; It's likely a reference book.
1. book
1. it seems; I think
2. right?; don't you agree?
1. of book; book’s
1. With a book; By book
1. It is a book.; Is a book.
1. Was a book.
1. If/when [it's a] book; If [it's] a book
1. It was a book.
1. Not a book.; It's not a book.