APA引文

Helm, D. (1993). The Assessment: The European Internal Market: The Next Steps.

Chicago Style (17th ed.) Citation

Helm, D. The Assessment: The European Internal Market: The Next Steps. 1993.

MLA引文

Helm, D. The Assessment: The European Internal Market: The Next Steps. 1993.

警告：這些引文格式不一定是100％准確.