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

2015 10.20	From Gamers vol.218	Seiyuu Paradise R shucchouban 3, COLOR {1 P}
2016 03.15	EX Taishuu 2016 April	seiyuu article, COLOR {1/3 P}
2016 04.20	From Gamers vol.224	Seiyuu Paradise R shucchouban 9, COLOR {1 P}
2016 10.20	From Gamers vol.230	Seiyuu Paradise R shucchouban 15, COLOR {1 P}
2017 05.20	From Gamers vol.237	Seiyuu Paradise R shucchouban 22, COLOR {1 P}
2018 02.20	From Gamers vol.246	CD interview, COLOR {1 P}