APA (7th ed.) Zitazioa
Hardwick, P., & Khan, B. a. L. (1999). An introduction to modern economics (5th.ed.). Longman.
Chicago Style (17th ed.) Zitazioa
Hardwick, Philip, eta Bahadur and Langmead Khan. An Introduction to Modern Economics. 5th.ed. London: Longman, 1999.
MLA (9th ed.) Zitazioa
Hardwick, Philip, eta Bahadur and Langmead Khan. An Introduction to Modern Economics. 5th.ed. Longman, 1999.
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