Nielsen Business MediaN.B.M.IncNielsen Business MediaN.B.M., Billboard, Nielsen Business Media, Inc., 26 kwietnia 2003 [dostęp 2015-11-21](ang.). Brak numerów stron w książce
contactmusic.com
Wenn: Tatu Singer Is Pregnant. [w:] Contact Music [on-line]. www.contactmusic.com, 2004-05-16. [dostęp 2014-02-18]. (ang.).
BirgitB.BeumersBirgitB., Pop Culture Russia!: Media, Arts, and Lifestyle, Pop Culture Russia!: Media, Arts, and Lifestyle Popular culture in the contemporary world, ABC-CLIO, 2005, s. 233, 1, ISBN 1-85109-459-8, Cytat: (...) This trend would be trumped, however, by the most popular pop band in Russian history, the duo t.A.T.u, playing in a Euro- pop rock style (...).(ang.).