APA (7th ed.) Citation

Oxford University Press, Hahn, F. H., & Hollis, M. (1979). Philosophy and economic theory. University Press.

Chicago Style (17th ed.) Citation

Oxford University Press, Frank H. Hahn, and Martin Hollis. Philosophy and Economic Theory. Oxford: University Press, 1979.

MLA (9th ed.) Citation

Oxford University Press, et al. Philosophy and Economic Theory. University Press, 1979.