APA引文

Heller, R. H. (1977). International trade: Theory and empirical evidence. Prentice Hall of India.

Chicago Edition Citation

Heller, Robert H. International Trade: Theory and Empirical Evidence. New Delhi: Prentice Hall of India, 1977.

MLA引文

Heller, Robert H. International Trade: Theory and Empirical Evidence. Prentice Hall of India, 1977.

警告：這些引文格式不一定是100％准確.