APA (7th ed.) Citation

Gregory, C. A., & Altman, J. C. (1989). Observing the economy. Routledge.

Chicago Style (17th ed.) Citation

Gregory, C. A., and Jon C. Altman. Observing the Economy. London [etc.]: Routledge, 1989.

MLA (9th ed.) Citation

Gregory, C. A., and Jon C. Altman. Observing the Economy. Routledge, 1989.