APA-referens

Ruth Gairns. (2003). Natural english (upper- intermediate student's book). Oxford, NY: Oxford Univ. Press.

Chicago-stil citat

Ruth Gairns. Natural English (upper- Intermediate Student's Book). Oxford, NY: Oxford Univ. Press, 2003.

MLA-referens

Ruth Gairns. Natural English (upper- Intermediate Student's Book). Oxford, NY: Oxford Univ. Press, 2003.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.