- ISBN: 978-3-639-71536-1

A collection of studies by the Kyushikai Association of Japan

- ISBN: 978-3-330-65148-7

Classicla Applications and Phenomena Comparative Study

- ISBN: 978-613-8-97401-7

Course Code: 300 – 399

- ISBN: 978-620-6-77317-7

- ISBN: 978-620-6-76885-2

37 OECD countries

- ISBN: 978-620-9-82023-6

- ISBN: 978-620-2-30351-4

On the other side of the word

- ISBN: 978-613-8-92320-6

- ISBN: 978-3-639-51611-1

- ISBN: 978-3-659-84310-5