APA Edition Citation

Harcourt, G. C., & Karmel, P. H. (1968). Economic activity. Cambridge university press.

Chicago Edition Citation

Harcourt, G C., and P H. Karmel. Economic Activity. London: Cambridge university press, 1968.

MLA Edition Citation

Harcourt, G C., and P H. Karmel. Economic Activity. Cambridge university press, 1968.