APA引文

Heal,Geoffrey. (1999). The economics of increasing returns. Edward Elgar.

Chicago Edition Citation

Heal,Geoffrey. The Economics of Increasing Returns. U K: Edward Elgar, 1999.

MLA引文

Heal,Geoffrey. The Economics of Increasing Returns. Edward Elgar, 1999.

警告：這些引文格式不一定是100％准確.