APA (7th ed.) Citation

Walton. ary M. & Wykoff, F. C. (1991). Understanding economics today. Irwin.

Chicago Style (17th ed.) Citation

Walton. ary M. and Frank C. Wykoff. Understanding Economics Today. Homewood, Ill: Irwin, 1991.

MLA (9th ed.) Citation

Walton. ary M. and Frank C. Wykoff. Understanding Economics Today. Irwin, 1991.