APA
Donaldson J., . (2007). The ox and the yak. Oxford: Oxford University Press.
Chicago
Donaldson Julia, . 2007. The ox and the yak. Oxford: Oxford University Press.
Harvard
Donaldson J., . (2007). The ox and the yak. Oxford: Oxford University Press.
MLA
Donaldson Julia, . The ox and the yak. Oxford: Oxford University Press. 2007.