Cita APA (7th ed.)
Friedman, D. D. (1986). Price theory: An intermediate text. South - western.
Cita Chicago (17th ed.)
Friedman, David D. Price Theory: An Intermediate Text. Dallas: South - western, 1986.
Cita MLA (9th ed.)
Friedman, David D. Price Theory: An Intermediate Text. South - western, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.