Cita APA (7th ed.)

Helderson, J. M. (1980). Micro economic theory: A Mathematical Approach (1st edition.). McGraw-Hill.

Cita Chicago (17th ed.)

Helderson, J M. Micro Economic Theory: A Mathematical Approach. 1st edition. Singapore: McGraw-Hill, 1980.

Cita MLA (9th ed.)

Helderson, J M. Micro Economic Theory: A Mathematical Approach. 1st edition. McGraw-Hill, 1980.