Some of the books and magazines that Rio has appeared in are as follows.

1995 04.10	Newtype May 1995	voice bloom, COLOR {3 P}
1996 05.25	El Hazard Official Tour Guide Etranger	comments, event/recording report, COLOR/MONO
1997 02.26	Ani Raji Grand Prix 6	article, COLOR {1/2 P}
1997 05.20	Anime Tokusatsu Hozonka Keikaku 96-97	interview, COLOR {2 P}
1997 11.25	AnimeV January 1998	column 1, MONO {1 P}
1997 12.25	AnimeV February 1998	column 2, MONO {1 P}
1997 12.26	Ani Raji Grand Prix 11	Radio Rom article, COLOR {2 P}
1998 01.25	AnimeV March 1998	column 3, MONO {1 P}
1998 01.25	Seiyuu Grand Prix volume 15	article, COLOR/MONO {1/2+2 P}
1998 01.30	Voice Animage 18	article, MONO {1/2 P}
1998 02.26	Ani Raji Grand Prix 12	article, COLOR {1 P}
1998 03.07	Comptiq April 1998	CD article, COLOR {1/2 P}
1998 04.25	Ani Raji Grand Prix 13	article, COLOR {1 P}
1998 08.07	Animage September 1998	trading cards, COLOR {2 cards}
1998 09.08	Flash	article, COLOR {1/4 P}
1998 10.10	Voice Idol vol 1	event report, COLOR {1 P}
1998 12.26	Ani Raji Grand Prix volume 17	article, COLOR {2 P}
2000 02.26	Ani Raji Grand Prix 24	event report, COLOR {1/2 P}
2000 05.10	Animedia June 2000	Digimon article, COLOR {2 P}
2002 11.10	Seiyuu Grand Prix December 2002	talk, COLOR/MONO {5 P}