APA-referens

(1991). A basic English grammer a basic English exercies (With key).

Chicago-stil citat

A Basic English Grammer a Basic English Exercies (With Key). 1991.

MLA-referens

A Basic English Grammer a Basic English Exercies (With Key). 1991.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.