APA (7th ed.) Citation

Wells, S. J. (1973). International economics: A general textbook (Rev. ed.). Allen & Unwin.

Chicago Style (17th ed.) Citation

Wells, Sidney J. International Economics: A General Textbook. Rev. ed. London: Allen & Unwin, 1973.

MLA (9th ed.) Citation

Wells, Sidney J. International Economics: A General Textbook. Rev. ed. Allen & Unwin, 1973.