APA (7th ed.) Citation

Launhardt, W., Creedy, J., & Schmidt, H. (1993). Mathematical principles of economics. Edward Elgar.

Chicago Style (17th ed.) Citation

Launhardt, Wilhelm, John Creedy, and Hilda Schmidt. Mathematical Principles of Economics. Aldershot, Hants, England ; Brookfield, Vt., USA: Edward Elgar, 1993.

MLA (9th ed.) Citation

Launhardt, Wilhelm, et al. Mathematical Principles of Economics. Edward Elgar, 1993.