Gaya APA

Puchta, H., Williams, M. (2011). Teaching Young Learners To Think : ELT-Activities For Young Learners Aged 6 - 12 . Cambridge: Helbling Languages.

Gaya MLA

Puchta, Herbert., Williams, Marion. "Teaching Young Learners To Think : ELT-Activities For Young Learners Aged 6 - 12". Cambridge: Helbling Languages, 2011. Text.