Dokumentuaren aipamena

APA (7th ed.) Zitazioa
Friedman, D. D. (1986). Price theory: An intermediate text. South - western.
Chicago Style (17th ed.) Zitazioa
Friedman, David D. Price Theory: An Intermediate Text. Dallas: South - western, 1986.
MLA (9th ed.) Zitazioa
Friedman, David D. Price Theory: An Intermediate Text. South - western, 1986.
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