Welch, P. J., & Welch, G. F. Economics: Theory and practice (5th ed.). Dryden.
Citación estilo ChicagoWelch, Patrick J., and Gerry F. Welch. Economics: Theory and Practice. 5th ed. Chicago: Dryden.
Cita MLAWelch, Patrick J., and Gerry F. Welch. Economics: Theory and Practice. 5th ed. Dryden.
Warning: These citations may not always be 100% accurate.