A problem book for certified respiratory therapists, including last year's exam information. - Title: Respiratory Therapist Certification Comprehensive Practice Workbook - Contents: Includes a lot of information from last year's exam. Thank you for viewing. I actually passed using this reference book. It is made in the same format as the exam, so I think it will be helpful for time management, etc. Also, it comes with a premium box that costs about 30,000 yen, making it expensive.