Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

Hardwick, Philip, i Bahadur Khan. An Introduction to Modern Economics. 4th.ed. Longman, 1994.