Παραπομπή APA

Black, J. B., & Bradley, J. F. (1990). Essential mathematics for economists (2nd ed.). Chichester: John Wiley & Sons.

Παραπομπή Chicago Style

Black, John B., and James F. Bradley. Essential Mathematics for Economists. 2nd ed. Chichester: John Wiley & Sons, 1990.

Παραπομπή MLA

Black, John B., and James F. Bradley. Essential Mathematics for Economists. 2nd ed. Chichester: John Wiley & Sons, 1990.

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