APA (7th ed.) Citation

Smith, H. M. (1999). Understanding economics. M.E. Sharpe.

Chicago Style (17th ed.) Citation

Smith, Harlan M. Understanding Economics. Armonk, N.Y.: M.E. Sharpe, 1999.

MLA (9th ed.) Citation

Smith, Harlan M. Understanding Economics. M.E. Sharpe, 1999.