I think that Internet articles are usually referred to by title (The stock buyback era is over: Now we can assess the damage”), source (Capital Flow Watch), author (John Oswin Schroy, date published (April 14, 2009) and permalink: (http://capital-flow-analysis.com/capital-flow-watch/the-stock-buyback-era-is-over-now-we-can-assess-the-damage.html).

The order and style would depend upon the system you are using for other quotes in your article.

I would suggest you check out the Zotero plugin for Firefox which simplifies the job of gathering references from Internet sources.

See: http://www.zotero.org/

Regards,

I am working on share buybacks and i found your article very interesting. However, i don’t know how i should cite it in my work.
Could you please help me.

Best regards