Heller,H Robert. International trade: Theory and empirical evidence (2.). Prentice Hall of India.
Chicago Stili AlıntıHeller,H Robert. International Trade: Theory and Empirical Evidence. 2. New Delhi: Prentice Hall of India.
MLA AlıntıHeller,H Robert. International Trade: Theory and Empirical Evidence. 2. Prentice Hall of India.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..