APA (7th ed.) Citation

Hardwick, P., Khan, B., & Langmead, J. (1986). An introduction to modern economics (2. ed.). Longman.

Chicago Style (17th ed.) Citation

Hardwick, Philip, Bahadur Khan, and John Langmead. An Introduction to Modern Economics. 2. ed. London [u.a.]: Longman, 1986.

MLA (9th ed.) Citation

Hardwick, Philip, et al. An Introduction to Modern Economics. 2. ed. Longman, 1986.