APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Harbury, C. D. Workbook in Introductory Economics. 4th ed. Oxford [etc.]: Pergamon, 1987.

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.