APA-referens

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

Chicago-stil citat

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

MLA-referens

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.