APA (7th ed.) Citation

Harbury, C. .. (1987). Workbook in introductory economics (4th ed.). Pergamon Press.

Chicago Style (17th ed.) Citation

Harbury, C .D. Workbook in Introductory Economics. 4th ed. Oxford [Oxfordshire] ; New York: Pergamon Press, 1987.

MLA (8th ed.) Citation

Harbury, C .D. Workbook in Introductory Economics. 4th ed. Pergamon Press, 1987.