APA
Donaldson J., Chatterton M., . (2008). Usman's books. Oxford: Oxford University Press.
Chicago
Donaldson Julia, Chatterton Martin, . 2008. Usman's books. Oxford: Oxford University Press.
Harvard
Donaldson J., Chatterton M., . (2008). Usman's books. Oxford: Oxford University Press.
MLA
Donaldson Julia, Chatterton Martin, . Usman's books. Oxford: Oxford University Press. 2008.