JTCA publishes several guidebooks for TC certification exams and the official journal, Frontier.

Guidebooks for TC certifications exams
The following guidebooks are available

Manual Writing Guidebook (Japanese Text)
ISBN 4-902820-00-5
3,990 Yen (Tax Included)

Guidebook for Direction of Manual Production (Japanese Text)
ISBN 4-902820-02-7
4,410 Yen (Tax Included)

Frontier (Official Journal of JTCA)

First issue appeared in February 2009. Bi-lingual publication (Japanese - English).
1,200 Yen (Tax Included)