Kiera Hudson & Der unterirdische Tausch /
O'Rourke, Tim,author.
O'Rourke, Lynda,editor.
Daniela Mansfield Translations,editor.
Originally published in English as: Kiera Hudson & the underground switch. ©2017.
"(Buch Acht der dritten Staffel der Kiera Hudson-Reihe)".