Basic literature
English . Narr Francke Attempto, 2015. Hallet, Wolfgang, and Frank Königs, editors. Handbuch Bilingualer Unterricht . Klett Kallmeyer, 2013. Hallet, Wolfgang, and Frank Königs. Handbuch Fremdsprachendidaktik [...] Learning Theories . 4 th ed., Routledge, 2019. Richards, Jack C., and Theodore S. Rodgers. Approaches and Methods in Language Teaching . 3 rd ed., Cambridge University Press, 2014. Surkamp, Carola, editor [...] Metzler Lexikon Fremdsprachendidaktik. 2 nd ed., J.B. Metzler, 2017. Surkamp, Carola, and Britta Viebrock, editors. Teaching English as a Foreign Language . J.B. Metzler, 2018. Literature for conducting research