Heller, H. (1977). International trade theory and empirical evidence/2nd ed. Prentice hall.
Chicago Style citaatHeller, H.Robert. International Trade Theory and Empirical Evidence/2nd Ed. New Delhi: Prentice hall, 1977.
MLA citatieHeller, H.Robert. International Trade Theory and Empirical Evidence/2nd Ed. Prentice hall, 1977.
Let op: Deze citaties zijn niet altijd 100% accuraat.