APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.