APA način citiranja

Heyderman, E. (2010). Complete PET Student's book with answers. Cambridge University Press.

Čikaški stil citiranja

Heyderman, Emma. Complete PET Student's Book With Answers. Cambridge University Press, 2010.

MLA način citiranja

Heyderman, Emma. Complete PET Student's Book With Answers. Cambridge University Press, 2010.

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