APA (7th ed.) Citation

Roemer, M. I. (1991). National health systems of the world. Oxford University.

Chicago Style (17th ed.) Citation

Roemer, Milton Irwin. National Health Systems of the World. Oxford: Oxford University, 1991.

MLA (9th ed.) Citation

Roemer, Milton Irwin. National Health Systems of the World. Oxford University, 1991.