APA استشهاد

Olsen Jan Abel. (2009). Principles in health economics and policy. Oxford University Press.

استشهاد بنمط شيكاغو

Olsen Jan Abel. Principles in Health Economics and Policy. Oxford: Oxford University Press, 2009.

MLA استشهاد

Olsen Jan Abel. Principles in Health Economics and Policy. Oxford University Press, 2009.