Cita APA

Welch, P. J., & Welch, G. F. Economics: Theory and practice (5th ed.). Dryden.

Citación estilo Chicago

Welch, Patrick J., and Gerry F. Welch. Economics: Theory and Practice. 5th ed. Chicago: Dryden.

Cita MLA

Welch, Patrick J., and Gerry F. Welch. Economics: Theory and Practice. 5th ed. Dryden.

Warning: These citations may not always be 100% accurate.