APA (7th ed.) Citation

Barrow, J. D. (1990). The world within the world. Oxford University Press.

Chicago Style (17th ed.) Citation

Barrow, John D. The World Within the World. Oxford [u.a.]: Oxford University Press, 1990.

MLA (9th ed.) Citation

Barrow, John D. The World Within the World. Oxford University Press, 1990.