APA (7th ed.) Citation

Hardwick, P., Khan, B., & Langmead, J. (1994). An introduction to modern economics (4th ed.). Longman.

Chicago Style (17th ed.) Citation

Hardwick, Philip, Bahadur Khan, and John Langmead. An Introduction to Modern Economics. 4th ed. London: Longman, 1994.

MLA (9th ed.) Citation

Hardwick, Philip, et al. An Introduction to Modern Economics. 4th ed. Longman, 1994.