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

2000.03.09	Animage April 2000	CC Sakura article, COLOR {1/2 P}
2000.06.29	Card Captor Sakura Complete Book 2	interview, MONO {1/2 P}
2000.10.30	Dengeki G's Magazine December 2000	Sister Princess article, COLOR {1/2 P}
2001.03.30	Dengeki G's Magazine May 2001	Sister Princess article, COLOR {1/4 P}
2002.09.30	Megami Magazine vol 30	Sister Princess Re Pure article, MONO {1 P}
2002.12.27	Megami Magazine vol 33	Sister Princess interview, COLOR/MONO {1/4 P}
2007.02.23	A-STATION March 2007	interview, COLOR {2 P}
2009.03.23	Weekly Playboy 2009 issue 14	idol seiyuu article, COLOR {7 P}