APA引文

Heller, H. (1977). International trade theory and empirical evidence/2nd ed. Prentice hall.

Chicago Edition Citation

Heller, H.Robert. International Trade Theory and Empirical Evidence/2nd Ed. New Delhi: Prentice hall, 1977.

MLA引文

Heller, H.Robert. International Trade Theory and Empirical Evidence/2nd Ed. Prentice hall, 1977.

警告：这些引文格式不一定是100％准确.