APA (7th ed.) Citation

Welch, P. J., & Welch, G. F. Economics: Theory and practice (9th ed.).

Chicago Style (17th ed.) Citation

Welch, Patrick J., and Gerry F. Welch. Economics: Theory and Practice. 9th ed.

MLA (8th ed.) Citation

Welch, Patrick J., and Gerry F. Welch. Economics: Theory and Practice. 9th ed.

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